diff --git a/src/jcloud_docsgen/cli/cli.py b/src/jcloud_docsgen/cli/cli.py
index 4205064..1ebdce9 100644
--- a/src/jcloud_docsgen/cli/cli.py
+++ b/src/jcloud_docsgen/cli/cli.py
@@ -12,9 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-'''
+"""
 The command line interface
-'''
+"""
 
 import argparse
 import pathlib
@@ -31,80 +31,81 @@ __all__ = [
 _LANG_PYTHON = 'python'
 _PROGRAM_NAME = 'jcloud-docsgen'
 
+
 def existing_directory(path: str) -> pathlib.Path:
     _path = path
     path = pathlib.Path(_path)
     if not path.exists():
-        raise argparse.ArgumentTypeError(
-            f'{_path}: no such file or directory'
-        )
+        raise argparse.ArgumentTypeError(f'{_path}: no such file or directory')
     if not path.is_dir():
         raise argparse.ArgumentTypeError(f'{_path}: not a directory')
     return path
 
+
 def error(message: str, exit_code: int = 1):
-    '''
+    """
     Shows an error message and returns the exit code.
 
     :param message: The error message to show.
     :type message: str
     :param exit_code: The exit code.
     :type exit_code: int
-    '''
+    """
 
-    print(f'{_PROGRAM_NAME}: error: {message}', file = sys.stderr)
+    print(f'{_PROGRAM_NAME}: error: {message}', file=sys.stderr)
     return exit_code
 
+
 def create_argument_parser() -> argparse.ArgumentParser:
-    '''
+    """
     Prepares a parser to parse the command-line arguments using
     argparse.
 
     :return: The parser.
     :rtype: argparse.ArgumentParser
-    '''
+    """
 
-    common_parser = argparse.ArgumentParser(add_help = False)
+    common_parser = argparse.ArgumentParser(add_help=False)
     common_parser.add_argument(
         'project_directory',
-        type = existing_directory,
-        nargs = '?',
-        default = pathlib.Path('.'),
-        help = 'The directory of the project',
+        type=existing_directory,
+        nargs='?',
+        default=pathlib.Path('.'),
+        help='The directory of the project',
     )
     common_parser.add_argument(
         '-o',
         '--output-dir',
-        type = pathlib.Path,
-        help = 'the output directory the documentation will be written to',
+        type=pathlib.Path,
+        help='the output directory the documentation will be written to',
     )
 
     argument_parser = argparse.ArgumentParser()
 
     subparsers = argument_parser.add_subparsers(
-        dest = 'language',
-        required = True,
+        dest='language',
+        required=True,
     )
 
     python_parser = subparsers.add_parser(
         _LANG_PYTHON,
-        parents = [common_parser],
-        help = 'generate documentation for Python project',
+        parents=[common_parser],
+        help='generate documentation for Python project',
     )
     python_parser.add_argument(
         '-s',
         '--sections',
-        nargs = '+',
-        choices = VALID_PYTHON_SECTIONS,
-        help = 'the sections to be included in the documentation',
+        nargs='+',
+        choices=VALID_PYTHON_SECTIONS,
+        help='the sections to be included in the documentation',
     )
     python_parser.add_argument(
         '-S',
         '--sections-exclude',
-        nargs = '+',
-        default = [],
-        choices = VALID_PYTHON_SECTIONS,
-        help = (
+        nargs='+',
+        default=[],
+        choices=VALID_PYTHON_SECTIONS,
+        help=(
             'the sections to be excluded in the documentation. '
             'If a section shall be included AND excluded, it is excluded.'
         ),
@@ -112,8 +113,8 @@ def create_argument_parser() -> argparse.ArgumentParser:
     python_parser.add_argument(
         '-H',
         '--allow-html',
-        action = 'store_true',
-        help = (
+        action='store_true',
+        help=(
             'indicates whether HTML is allowed in the documentation. '
             'By default, HTML is disabled.'
         ),
@@ -121,8 +122,8 @@ def create_argument_parser() -> argparse.ArgumentParser:
     python_parser.add_argument(
         '-T',
         '--allow-tables',
-        action = 'store_true',
-        help = (
+        action='store_true',
+        help=(
             'indicates whether Markdown tables are allowed in the '
             'documentation. By default, Markdown tables are disabled. '
             'Warning: Markdown tables are not CommonMark.'
@@ -131,7 +132,8 @@ def create_argument_parser() -> argparse.ArgumentParser:
 
     return argument_parser
 
-def main(argv = None) -> int:
+
+def main(argv=None) -> int:
     argument_parser = create_argument_parser()
     args = argument_parser.parse_args(argv)
 
@@ -141,13 +143,14 @@ def main(argv = None) -> int:
     try:
         if args.language == _LANG_PYTHON:
             from .languages.python import generate
+
             generate(
                 args.project_directory,
                 args.output_dir,
-                include_sections = args.sections,
-                exclude_sections = args.sections_exclude,
-                allow_html = args.allow_html,
-                allow_tables = args.allow_tables,
+                include_sections=args.sections,
+                exclude_sections=args.sections_exclude,
+                allow_html=args.allow_html,
+                allow_tables=args.allow_tables,
             )
     except FileNotFoundError as exc:
         return error(f'{exc.filename}: no such file or directory')
diff --git a/src/jcloud_docsgen/cli/languages/python.py b/src/jcloud_docsgen/cli/languages/python.py
index ab4bbce..df0dff6 100644
--- a/src/jcloud_docsgen/cli/languages/python.py
+++ b/src/jcloud_docsgen/cli/languages/python.py
@@ -29,11 +29,12 @@ VALID_SECTIONS = list(
     PythonDefinitionDocumentationIncludeSections()._args.keys()
 )
 
+
 def parse_sections_list(
     include_sections: Optional[list[str]] = None,
     exclude_sections: list[str] = [],
 ) -> PythonDefinitionDocumentationIncludeSections:
-    '''
+    """
     Returns a Python definition documentation sections list from the
     sections list to be included and the sections list to be excluded.
     These lists both consist of the sections as strings which contain
@@ -46,7 +47,7 @@ def parse_sections_list(
 
     :return: The Python definition documentation sections object.
     :rtype: PythonDefinitionDocumentationIncludeSections
-    '''
+    """
 
     if include_sections is None:
         include_sections = VALID_SECTIONS[:]
@@ -56,17 +57,18 @@ def parse_sections_list(
             del include_sections[include_sections.index(section)]
 
     return PythonDefinitionDocumentationIncludeSections(
-        signature  = 'signature'  in include_sections,
-        returns    = 'returns'    in include_sections,
-        params     = 'params'     in include_sections,
-        exceptions = 'exceptions' in include_sections,
-        examples   = 'examples'   in include_sections,
-        docstring  = 'docstring'  in include_sections,
-        bases      = 'bases'      in include_sections,
-        decorators = 'decorators' in include_sections,
-        class_body = 'class_body' in include_sections,
+        signature='signature' in include_sections,
+        returns='returns' in include_sections,
+        params='params' in include_sections,
+        exceptions='exceptions' in include_sections,
+        examples='examples' in include_sections,
+        docstring='docstring' in include_sections,
+        bases='bases' in include_sections,
+        decorators='decorators' in include_sections,
+        class_body='class_body' in include_sections,
     )
 
+
 def _generate(
     project_directory: pathlib.Path,
     output_directory: pathlib.Path,
@@ -77,7 +79,7 @@ def _generate(
     allow_html: bool = False,
     allow_tables: bool = False,
 ) -> None:
-    '''
+    """
     Generates the documentation for a Python project.
 
     :param project_directory: The project directory.
@@ -92,17 +94,18 @@ def _generate(
     :type allow_html: bool
     :param allow_tables: Indicates whether Markdown tables are allowed.
                          Warning: Markdown tables are not CommonMark.
-    '''
+    """
 
     docs_generator = PythonDocumentationGenerator(
         project_directory,
         output_directory,
-        include_sections = include_sections,
-        allow_html = allow_html,
-        allow_tables = allow_tables,
+        include_sections=include_sections,
+        allow_html=allow_html,
+        allow_tables=allow_tables,
     )
     docs_generator.generate_documentation()
 
+
 def generate(
     project_directory: pathlib.Path,
     output_directory: pathlib.Path,
@@ -112,7 +115,7 @@ def generate(
     allow_html: bool = False,
     allow_tables: bool = False,
 ) -> None:
-    '''
+    """
     Generates the documentation for a Python project.
 
     :param project_directory: The project directory.
@@ -130,14 +133,14 @@ def generate(
     :type allow_html: bool
     :param allow_tables: Indicates whether Markdown tables are allowed.
                          Warning: Markdown tables are not CommonMark.
-    '''
+    """
 
     sections = parse_sections_list(include_sections, exclude_sections)
 
     _generate(
         project_directory,
         output_directory,
-        include_sections = sections,
-        allow_html = allow_html,
-        allow_tables = allow_tables,
+        include_sections=sections,
+        allow_html=allow_html,
+        allow_tables=allow_tables,
     )
diff --git a/src/jcloud_docsgen/core/python/_core.py b/src/jcloud_docsgen/core/python/_core.py
index cf4ba2c..5fe9d1b 100644
--- a/src/jcloud_docsgen/core/python/_core.py
+++ b/src/jcloud_docsgen/core/python/_core.py
@@ -40,15 +40,16 @@ __all__ = [
     'PythonDocumentationGenerator',
 ]
 
+
 def _collect_definitions(tree_or_node) -> Iterator[PythonDefinition]:
-    '''
+    """
     Collects all definitions of the tree or node.
 
     :param tree_or_node: The tree or node.
 
     :return: The definitions.
     :rtype: Iterator[PythonDefinition]
-    '''
+    """
 
     for node in tree_or_node.body:
         if isinstance(node, ast.FunctionDef):
@@ -58,6 +59,7 @@ def _collect_definitions(tree_or_node) -> Iterator[PythonDefinition]:
         if isinstance(node, ast.ClassDef):
             yield PythonClassDefinition.from_node(node)
 
+
 _Arguments: TypeAlias = tuple[
     list[PythonFunctionArgument],
     list[PythonFunctionArgument],
@@ -66,10 +68,11 @@ _Arguments: TypeAlias = tuple[
     Union[PythonFunctionArgument, None],
 ]
 
+
 def _group_argument_list(
     argument_list: list[PythonFunctionArgument],
 ) -> _Arguments:
-    '''
+    """
     Groups the argument list into a list of positional-only arguments, a
     list of normal arguments, the * argument if there is one, a list of
     keyword-only arguments and the var-keyword-argument if there is one.
@@ -78,13 +81,12 @@ def _group_argument_list(
     :type argument_list: list[PythonFunctionArgument]
 
     :rtype: _Arguments
-    '''
+    """
 
     if argument_list:
-        if argument_list[-1].kind != PythonArgumentKind.KWARGS and any([
-            arg.kind == PythonArgumentKind.KWARGS
-            for arg in argument_list
-        ]):
+        if argument_list[-1].kind != PythonArgumentKind.KWARGS and any(
+            [arg.kind == PythonArgumentKind.KWARGS for arg in argument_list]
+        ):
             raise PythonArgumentStructureError(
                 'arguments cannot follow var-keyword argument',
             )
@@ -106,7 +108,7 @@ def _group_argument_list(
             if vararg is not None:
                 raise PythonArgumentStructureError(
                     '* argument may only appear once',
-                    definition = arg,
+                    definition=arg,
                 )
             vararg = arg
 
@@ -124,10 +126,11 @@ def _group_argument_list(
         kwargs,
     )
 
+
 def _signature_argument_list(
     argument_list: list[PythonFunctionArgument],
 ) -> list[str]:
-    '''
+    """
     Returns a list of the arguments as strings for a function signature.
 
     :param argument_list: The argument list.
@@ -135,7 +138,7 @@ def _signature_argument_list(
 
     :return: The list of function signature argument strings.
     :rtype: list[str]
-    '''
+    """
 
     (
         positional_only_args,
@@ -170,8 +173,9 @@ def _signature_argument_list(
 
     return args
 
+
 def _fit_row_length(expected: int, row: tuple) -> tuple:
-    '''
+    """
     Fits the row length to the expected length.
 
     If the row is too long, the tail, that makes it too long, is omitted.
@@ -181,7 +185,7 @@ def _fit_row_length(expected: int, row: tuple) -> tuple:
     :type expected: int
     :param row: The row.
     :type row: tuple
-    '''
+    """
 
     if expected < 0:
         raise ValueError('expected must be larger than or equal 0.')
@@ -191,6 +195,7 @@ def _fit_row_length(expected: int, row: tuple) -> tuple:
     else:
         return row + (None,) * (expected - len(row))
 
+
 def _markdown_table(
     header: tuple,
     body: list[tuple],
@@ -200,7 +205,7 @@ def _markdown_table(
     one_line_values: bool = True,
     missing_value: str = '--',
 ) -> str:
-    '''
+    """
     Generates a table.
 
     If ``allow_markdown_table`` is ``False``, an alternative
@@ -222,7 +227,7 @@ def _markdown_table(
     :param missing_value: The string that is used if a value is missing
                           (only if ``force_row_lengths`` is ``False``).
     :type missing_value: str
-    '''
+    """
 
     if not header or not body:
         return ''
@@ -231,37 +236,34 @@ def _markdown_table(
 
     if allow_markdown_table:
         table = (
-            '| ' \
-            + ' | '.join(header) \
-            + ' |\n|' \
-            + ' --- |' * len(header) \
-            + '\n'
+            '| ' + ' | '.join(header) + ' |\n|' + ' --- |' * len(header) + '\n'
         )
 
-
         for row in body:
             if len(row) != header_len:
                 if force_row_lengths:
                     raise ValueError(
                         f'expected {header_len} value{
-                            "s"
-                            if header_len > 1
-                            else ""
+                            "s" if header_len > 1 else ""
                         }, got {len(row)}',
                     )
                 else:
                     row = _fit_row_length(header_len, row)
 
-            table += '| ' + ' | '.join([
-                str(
-                    col
-                    if col is not None
-                    else missing_value
-                ).replace('\n', ' ')
-                if one_line_values
-                else str(col if col is not None else missing_value)
-                for col in row
-            ]) + ' |\n'
+            table += (
+                '| '
+                + ' | '.join(
+                    [
+                        str(col if col is not None else missing_value).replace(
+                            '\n', ' '
+                        )
+                        if one_line_values
+                        else str(col if col is not None else missing_value)
+                        for col in row
+                    ]
+                )
+                + ' |\n'
+            )
     else:
         table = ''
 
@@ -270,9 +272,7 @@ def _markdown_table(
                 if force_row_lengths:
                     raise ValueError(
                         f'expected {header_len} value{
-                            "s"
-                            if header_len > 1
-                            else ""
+                            "s" if header_len > 1 else ""
                         }, got {len(row)}',
                     )
                 else:
@@ -281,29 +281,25 @@ def _markdown_table(
             sep = '- '
             for i, col in enumerate(row):
                 table += (
-                    sep \
-                    + header[i] \
-                    + ': ' \
+                    sep
+                    + header[i]
+                    + ': '
                     + (
-                        str(
-                            col
-                            if col is not None
-                            else missing_value
-                        ).replace('\n', ' ') \
-                        if one_line_values \
-                        else str(
-                            col
-                            if col is not None
-                            else missing_value
+                        str(col if col is not None else missing_value).replace(
+                            '\n', ' '
                         )
-                    ) + '\n\n'
+                        if one_line_values
+                        else str(col if col is not None else missing_value)
+                    )
+                    + '\n\n'
                 )
                 sep = '  '
 
     return table.strip()
 
+
 def _is_docstring(docstring: Union[str, PythonDocstring, None]) -> bool:
-    '''
+    """
     Checks whether the docstring is a docstring or an empty docstring.
 
     :param docstring: The docstring.
@@ -311,7 +307,7 @@ def _is_docstring(docstring: Union[str, PythonDocstring, None]) -> bool:
 
     :return: Whether there is a docstring.
     :rtype: bool
-    '''
+    """
 
     if docstring is None:
         return False
@@ -321,11 +317,13 @@ def _is_docstring(docstring: Union[str, PythonDocstring, None]) -> bool:
 
     return docstring.strip() != ''
 
+
 @dataclass
 class _FunctionParamInfo:
     annotation: Union[str, None]
     description: Union[str, None]
 
+
 @dataclass
 class _NoDocstringTemplate:
     description = None
@@ -340,10 +338,12 @@ class _NoDocstringTemplate:
     long_description = None
     blank_after_short_description = None
 
+
 _NoDocstring = _NoDocstringTemplate()
 
+
 def _argument_kind_human_readable(argument_kind: PythonArgumentKind) -> str:
-    '''
+    """
     Returns the human-readable representation of a
     ``PythonArgumentKind``.
 
@@ -352,15 +352,16 @@ def _argument_kind_human_readable(argument_kind: PythonArgumentKind) -> str:
 
     :return: The human-readable representation.
     :rtype: str
-    '''
+    """
 
     return argument_kind.name.lower().replace('_', '-')
 
+
 def _function_params_info(
     arg_list: list[PythonFunctionArgument],
     docstring_arg_list: list[docstring_parser.DocstringParam],
 ) -> dict[str, _FunctionParamInfo]:
-    '''
+    """
     Returns a dictionary with the parameter info.
 
     The keys of the dictionary are the parameter names and the values are
@@ -377,11 +378,10 @@ def _function_params_info(
 
     :return: The dictionary with the parameter types.
     :rtype: dict[str, _FunctionParamInfo]
-    '''
+    """
 
     arg_annotations = {
-        arg.name: _FunctionParamInfo(arg.annotation, None)
-        for arg in arg_list
+        arg.name: _FunctionParamInfo(arg.annotation, None) for arg in arg_list
     }
 
     for arg in docstring_arg_list:
@@ -393,8 +393,9 @@ def _function_params_info(
 
     return arg_annotations
 
+
 class PythonDefinitionDocumentationIncludeSections:
-    '''
+    """
     A class representing the included sections in a Python definition
     documentation.
 
@@ -414,50 +415,55 @@ class PythonDefinitionDocumentationIncludeSections:
     :type bases: bool
     :param decorators: Whether include the decorators section.
     :type decorators: bool
-    '''
+    """
 
     def __init__(
-            self,
-            *,
-            signature: bool = True,
-            returns: bool = True,
-            params: bool = True,
-            exceptions: bool = True,
-            examples: bool = True,
-            docstring: bool = True,
-            bases: bool = True,
-            decorators: bool = True,
-            class_body: bool = True,
-        ):
-            self.signature = signature
-            self.returns = returns
-            self.params = params
-            self.exceptions = exceptions
-            self.examples = examples
-            self.docstring = docstring
-            self.bases = bases
-            self.decorators = decorators
-            self.class_body = class_body
+        self,
+        *,
+        signature: bool = True,
+        returns: bool = True,
+        params: bool = True,
+        exceptions: bool = True,
+        examples: bool = True,
+        docstring: bool = True,
+        bases: bool = True,
+        decorators: bool = True,
+        class_body: bool = True,
+    ):
+        self.signature = signature
+        self.returns = returns
+        self.params = params
+        self.exceptions = exceptions
+        self.examples = examples
+        self.docstring = docstring
+        self.bases = bases
+        self.decorators = decorators
+        self.class_body = class_body
 
-            self._args = {
-                'signature': self.signature,
-                'returns': self.returns,
-                'params': self.params,
-                'exceptions': self.exceptions,
-                'examples': self.examples,
-                'docstring': self.docstring,
-                'bases': self.bases,
-                'decorators': self.decorators,
-                'class_body': self.class_body,
-            }
+        self._args = {
+            'signature': self.signature,
+            'returns': self.returns,
+            'params': self.params,
+            'exceptions': self.exceptions,
+            'examples': self.examples,
+            'docstring': self.docstring,
+            'bases': self.bases,
+            'decorators': self.decorators,
+            'class_body': self.class_body,
+        }
 
     def __repr__(self) -> str:
-        return type(self).__name__+  '(' + ', '.join(
-            [
-                key + ' = ' + repr(value)
-                for key, value in self._args.items()
-            ],
-        ) + ')'
+        return (
+            type(self).__name__
+            + '('
+            + ', '.join(
+                [
+                    key + ' = ' + repr(value)
+                    for key, value in self._args.items()
+                ],
+            )
+            + ')'
+        )
 
     def __eq__(self, value) -> str:
         if not isinstance(
@@ -467,8 +473,9 @@ class PythonDefinitionDocumentationIncludeSections:
             return False
         return self._args == value._args
 
+
 class PythonDefinitionDocumentationGenerator:
-    '''
+    """
     A documentation generator for a Python definition.
 
     :param definition: The Python definition.
@@ -492,21 +499,21 @@ class PythonDefinitionDocumentationGenerator:
     :type skip_empty_sections: bool
     :param is_method: Controls whether the definition is a class method.
     :type is_method: bool
-    '''
+    """
 
     def __init__(
-            self,
-            definition: PythonDefinition,
-            include_sections: PythonDefinitionDocumentationIncludeSections = (
-                PythonDefinitionDocumentationIncludeSections()
-            ),
-            level: int = 1,
-            *,
-            allow_html: bool = True,
-            allow_tables: bool = False,
-            skip_empty_sections: bool = True,
-            is_method: bool = False,
-        ) -> None:
+        self,
+        definition: PythonDefinition,
+        include_sections: PythonDefinitionDocumentationIncludeSections = (
+            PythonDefinitionDocumentationIncludeSections()
+        ),
+        level: int = 1,
+        *,
+        allow_html: bool = True,
+        allow_tables: bool = False,
+        skip_empty_sections: bool = True,
+        is_method: bool = False,
+    ) -> None:
         self.definition = definition
         self.include_sections = include_sections
 
@@ -521,13 +528,15 @@ class PythonDefinitionDocumentationGenerator:
     @property
     def _docstring(self):
         if self._docstring_cache is None:
-            self._docstring_cache = self.definition.doc.parse() \
-                if _is_docstring(self.definition.doc) \
+            self._docstring_cache = (
+                self.definition.doc.parse()
+                if _is_docstring(self.definition.doc)
                 else _NoDocstring
+            )
         return self._docstring_cache
 
     def generate_signature(self) -> str:
-        '''
+        """
         Generates the signature of the definition. Works only if the
         definition is a function or asynchronous function definition.
 
@@ -535,18 +544,23 @@ class PythonDefinitionDocumentationGenerator:
 
         :return: The signature.
         :rtype: str
-        '''
+        """
 
         if isinstance(self.definition, PythonClassDefinition):
             raise TypeError(
                 'Cannot generate a signature of a class definition.',
             )
 
-        signature = self.definition.name + '(' + ', '.join(
-            _signature_argument_list(
-                self.definition.args,
-            ),
-        ) + ')'
+        signature = (
+            self.definition.name
+            + '('
+            + ', '.join(
+                _signature_argument_list(
+                    self.definition.args,
+                ),
+            )
+            + ')'
+        )
 
         if self.definition.returns is not None:
             signature += ' -> ' + self.definition.returns
@@ -554,38 +568,38 @@ class PythonDefinitionDocumentationGenerator:
         return signature.strip()
 
     def _generate_signature_section(self) -> str:
-        '''
+        """
         Generates the signature section.
 
         :return: The signature section.
         :rtype: str
-        '''
+        """
 
         definition_type = 'Function' if not self.is_method else 'Method'
-        heading = self.level * '#' + '# ' + (definition_type) +' signature'
-        return f'''{heading}
+        heading = self.level * '#' + '# ' + (definition_type) + ' signature'
+        return f"""{heading}
 
 ```python
 {self.generate_signature()}
-```'''
+```"""
 
     def _generate_docstring_section(self) -> str:
-        '''
+        """
         Generates the docstring section.
 
         :return: The docstring section.
         :rtype: str
-        '''
+        """
 
         md = ''
 
         if _is_docstring(self.definition.doc) or not self.skip_empty_sections:
             if self.allow_html:
-                md += f'<details><summary><h{str(
-                    self.level + 1
-                )} style="display:inline">Docstring</h{str(
-                    self.level + 1
-                )}></summary>'
+                md += f'<details><summary><h{
+                    str(self.level + 1)
+                } style="display:inline">Docstring</h{
+                    str(self.level + 1)
+                }></summary>'
             else:
                 md += self.level * '#' + '# Docstring\n\n'
 
@@ -602,12 +616,12 @@ class PythonDefinitionDocumentationGenerator:
         return md.strip()
 
     def _generate_params_section(self) -> str:
-        '''
+        """
         Generates the parameters section.
 
         :return: The parameters section.
         :rtype: str
-        '''
+        """
 
         md = ''
 
@@ -636,7 +650,7 @@ class PythonDefinitionDocumentationGenerator:
                     )
                     for arg in self.definition.args
                 ],
-                allow_markdown_table = self.allow_tables,
+                allow_markdown_table=self.allow_tables,
             )
 
             md += '\n\n'
@@ -647,12 +661,12 @@ class PythonDefinitionDocumentationGenerator:
         return md.strip()
 
     def _generate_returns_section(self) -> str:
-        '''
+        """
         Generates the returns section.
 
         :return: The returns section.
         :rtype: str
-        '''
+        """
 
         md = ''
 
@@ -686,12 +700,12 @@ class PythonDefinitionDocumentationGenerator:
         return md.strip()
 
     def _generate_exceptions_section(self) -> str:
-        '''
+        """
         Generates the exceptions section.
 
         :return: The exceptions section.
         :rtype: str
-        '''
+        """
 
         md = ''
 
@@ -699,26 +713,31 @@ class PythonDefinitionDocumentationGenerator:
             md += self.level * '#' + '# Exceptions\n\n'
 
         if self._docstring.raises:
-            md += _markdown_table(('Exception', 'Description'), [
-                (
-                    ('`' + exception.type_name + '`')
-                    if exception.type_name is not None
-                    else None, non_empty_str(exception.description)
-                )
-                for exception in self._docstring.raises
-            ], allow_markdown_table = self.allow_tables)
+            md += _markdown_table(
+                ('Exception', 'Description'),
+                [
+                    (
+                        ('`' + exception.type_name + '`')
+                        if exception.type_name is not None
+                        else None,
+                        non_empty_str(exception.description),
+                    )
+                    for exception in self._docstring.raises
+                ],
+                allow_markdown_table=self.allow_tables,
+            )
         elif not self.skip_empty_sections:
             md += 'This function raises no exceptions.'
 
         return md.strip()
 
     def _generate_examples_section(self) -> str:
-        '''
+        """
         Generates the examples section.
 
         :return: The examples section.
         :rtype: str
-        '''
+        """
 
         md = ''
 
@@ -727,9 +746,11 @@ class PythonDefinitionDocumentationGenerator:
 
         examples = []
         for example in self._docstring.examples:
-            examples.append('```python\n' +\
-                (example.snippet or example.description) + \
-                '\n```')
+            examples.append(
+                '```python\n'
+                + (example.snippet or example.description)
+                + '\n```'
+            )
         md += '\n\n---\n\n'.join(examples)
 
         if not self._docstring.examples and not self.skip_empty_sections:
@@ -738,12 +759,12 @@ class PythonDefinitionDocumentationGenerator:
         return md.strip()
 
     def _generate_decorators_section(self) -> str:
-        '''
+        """
         Generates the decorators section.
 
         :return: The decorators section.
         :rtype: str
-        '''
+        """
 
         md = ''
 
@@ -759,12 +780,12 @@ class PythonDefinitionDocumentationGenerator:
         return md.strip()
 
     def _generate_bases_section(self) -> str:
-        '''
+        """
         Generates the bases section.
 
         :return: The bases section.
         :rtype: str
-        '''
+        """
 
         md = ''
 
@@ -780,12 +801,12 @@ class PythonDefinitionDocumentationGenerator:
         return md.strip()
 
     def _generate_body_section(self) -> str:
-        '''
+        """
         Generates the body section.
 
         :return: The body section.
         :rtype: str
-        '''
+        """
 
         md = ''
 
@@ -793,15 +814,18 @@ class PythonDefinitionDocumentationGenerator:
             md += self.level * '#' + '# Body\n\n'
 
         for method_or_class in self.definition.body:
-            md += PythonDefinitionDocumentationGenerator(
-                method_or_class,
-                self.include_sections,
-                level = self.level + 2,
-                allow_html = self.allow_html,
-                allow_tables = self.allow_tables,
-                skip_empty_sections = self.skip_empty_sections,
-                is_method = True,
-            ).generate_documentation() + '\n\n'
+            md += (
+                PythonDefinitionDocumentationGenerator(
+                    method_or_class,
+                    self.include_sections,
+                    level=self.level + 2,
+                    allow_html=self.allow_html,
+                    allow_tables=self.allow_tables,
+                    skip_empty_sections=self.skip_empty_sections,
+                    is_method=True,
+                ).generate_documentation()
+                + '\n\n'
+            )
 
         if not self.definition.body and not self.skip_empty_sections:
             md += 'This class does not have a body.'
@@ -809,12 +833,12 @@ class PythonDefinitionDocumentationGenerator:
         return md.strip()
 
     def generate_documentation(self) -> str:
-        '''
+        """
         Generates the documentation in the markdown format.
 
         :return: The documentation.
         :rtype: str
-        '''
+        """
 
         md = self.level * '#' + ' '
 
@@ -848,13 +872,13 @@ class PythonDefinitionDocumentationGenerator:
                 md += self._generate_signature_section() + '\n\n'
 
             if self.include_sections.returns:
-               md += self._generate_returns_section() + '\n\n'
+                md += self._generate_returns_section() + '\n\n'
 
             if self.include_sections.params:
-               md += self._generate_params_section() + '\n\n'
+                md += self._generate_params_section() + '\n\n'
 
             if self.include_sections.exceptions:
-               md += self._generate_exceptions_section() + '\n\n'
+                md += self._generate_exceptions_section() + '\n\n'
 
         if isinstance(self.definition, PythonClassDefinition):
             if self.include_sections.bases:
@@ -874,8 +898,9 @@ class PythonDefinitionDocumentationGenerator:
 
         return md.strip()
 
+
 class PythonModuleDocumentationGenerator:
-    '''
+    """
     A documentation generator for a Python module.
 
     :param module_path: The path of the module file.
@@ -887,21 +912,21 @@ class PythonModuleDocumentationGenerator:
     :param include_sections: The sections that will be included.
     :type include_sections: PythonDefinitionDocumentationIncludeSections
     :param kwargs: The options for ``PythonDefinitionDocumentationGenerator``.
-    '''
+    """
 
     def __init__(
-            self,
-            module_path: pathlib.Path,
-            src_directory: Union[pathlib.Path, None] = None,
-            include_sections: PythonDefinitionDocumentationIncludeSections = (
-                PythonDefinitionDocumentationIncludeSections()
-            ),
-            **kwargs,
-        ) -> None:
+        self,
+        module_path: pathlib.Path,
+        src_directory: Union[pathlib.Path, None] = None,
+        include_sections: PythonDefinitionDocumentationIncludeSections = (
+            PythonDefinitionDocumentationIncludeSections()
+        ),
+        **kwargs,
+    ) -> None:
         if module_path.name.count('.') > 1:
             raise InvalidNamespaceError(
                 'namespace identifier cannot contain more than one dot',
-                namespace_identifier = module_path.name,
+                namespace_identifier=module_path.name,
             )
 
         self.module_path = pathlib.Path(str(module_path))
@@ -930,25 +955,24 @@ class PythonModuleDocumentationGenerator:
         return self._ast_cache
 
     def collect_definitions(self) -> Iterator[PythonDefinition]:
-        '''
+        """
         Collects all function and class definitions of the module.
 
         :return: All definitions of the module
         :rtype: Iterator[PythonDefinition]
-        '''
+        """
 
         tree = self._ast
 
         return _collect_definitions(tree)
 
     def generate_documentation(self) -> str:
-        '''
+        """
         Generates the documentation in the markdown format.
 
         :return: The documentation.
         :rtype: str
-        '''
-
+        """
 
         md = '# Module `'
 
@@ -973,26 +997,30 @@ class PythonModuleDocumentationGenerator:
             md += docstring + '\n\n'
 
         for definition in self.collect_definitions():
-            md += PythonDefinitionDocumentationGenerator(
-                definition,
-                self.include_sections,
-                2,
-                **self.kwargs,
-            ).generate_documentation() + '\n\n'
+            md += (
+                PythonDefinitionDocumentationGenerator(
+                    definition,
+                    self.include_sections,
+                    2,
+                    **self.kwargs,
+                ).generate_documentation()
+                + '\n\n'
+            )
 
         return md.strip()
 
+
 def _generate_package_namespace_documentation(
-        namespace: PythonPackageNamespace,
-        documentation_directory: pathlib.Path,
-        root_directory: pathlib.Path,
-        dir: pathlib.Path,
-        include_sections: PythonDefinitionDocumentationIncludeSections = (
-            PythonDefinitionDocumentationIncludeSections()
-        ),
-        kwargs: dict = {},
-    ) -> None:
-    '''
+    namespace: PythonPackageNamespace,
+    documentation_directory: pathlib.Path,
+    root_directory: pathlib.Path,
+    dir: pathlib.Path,
+    include_sections: PythonDefinitionDocumentationIncludeSections = (
+        PythonDefinitionDocumentationIncludeSections()
+    ),
+    kwargs: dict = {},
+) -> None:
+    """
     Generates the documentation for a package namespace and writes it to
     the documentation directory.
 
@@ -1007,19 +1035,20 @@ def _generate_package_namespace_documentation(
     :param include_sections: The sections to be included in the documentation.
     :type include_sections: PythonDefinitionDocumentationIncludeSections
     :param kwargs: The options for the documentation generator.
-    '''
+    """
 
     documentation_directory = pathlib.Path(str(documentation_directory))
 
     for sub_namespace in namespace.sub_namespaces:
         if isinstance(sub_namespace, PythonPackageNamespace):
-            (
-                documentation_directory / sub_namespace.name
-            ).mkdir(mode = 0o700, exist_ok = True)
+            (documentation_directory / sub_namespace.name).mkdir(
+                mode=0o700, exist_ok=True
+            )
             _generate_package_namespace_documentation(
                 sub_namespace,
                 documentation_directory / sub_namespace.name,
-                root_directory, dir / sub_namespace.name,
+                root_directory,
+                dir / sub_namespace.name,
                 include_sections,
                 kwargs,
             )
@@ -1035,8 +1064,9 @@ def _generate_package_namespace_documentation(
                 ).generate_documentation()
             )
 
+
 class PythonDocumentationGenerator:
-    '''
+    """
     The class for the documentation generator.
 
     :param project_directory: The directory of the project.
@@ -1046,17 +1076,17 @@ class PythonDocumentationGenerator:
     :param include_sections: The sections to be included in the documentation.
     :type include_sections: PythonDefinitionDocumentationIncludeSections
     :param kwargs: The options for ``PythonDefinitionDocumentationGenerator``.
-    '''
+    """
 
     def __init__(
-            self,
-            project_directory: pathlib.Path,
-            docs_directory: pathlib.Path,
-            include_sections: PythonDefinitionDocumentationIncludeSections = (
-                PythonDefinitionDocumentationIncludeSections()
-            ),
-            **kwargs,
-        ) -> None:
+        self,
+        project_directory: pathlib.Path,
+        docs_directory: pathlib.Path,
+        include_sections: PythonDefinitionDocumentationIncludeSections = (
+            PythonDefinitionDocumentationIncludeSections()
+        ),
+        **kwargs,
+    ) -> None:
         self.project_directory = pathlib.Path(str(project_directory))
         self.docs_directory = pathlib.Path(str(docs_directory))
         self.include_sections = include_sections
@@ -1074,25 +1104,24 @@ class PythonDocumentationGenerator:
         return namespace
 
     def namespace(self) -> list[PythonPackageNamespace]:
-        '''
+        """
         Returns the project as a namespace.
 
         :return: The project as a namespace.
         :rtype: list[PythonPackageNamespace]
-        '''
+        """
 
         src_dir = self.project_directory / 'src'
 
         return [
-            self._namespace(dir)
-            for dir in src_dir.iterdir() if dir.is_dir()
+            self._namespace(dir) for dir in src_dir.iterdir() if dir.is_dir()
         ]
 
     def generate_documentation(self) -> None:
-        '''
+        """
         Generates the full project documentation and writes it to the
         documentation directory.
-        '''
+        """
 
         _generate_package_namespace_documentation(
             PythonPackageNamespace('src', self.namespace()),
diff --git a/src/jcloud_docsgen/core/python/arguments.py b/src/jcloud_docsgen/core/python/arguments.py
index 9140fd8..961b5dc 100644
--- a/src/jcloud_docsgen/core/python/arguments.py
+++ b/src/jcloud_docsgen/core/python/arguments.py
@@ -31,6 +31,7 @@ __all__ = [
     'PythonASTArgumentsListParser',
 ]
 
+
 class PythonArgumentKind(Enum):
     NORMAL = 0
     POSITIONAL_ONLY = 1
@@ -38,8 +39,9 @@ class PythonArgumentKind(Enum):
     VARARG = 3
     KWARGS = 4
 
+
 class PythonFunctionArgument:
-    '''
+    """
     Represents an argument of a Python function.
 
     :param name: The name of the argument.
@@ -50,7 +52,7 @@ class PythonFunctionArgument:
     :type default: Union[str, None]
     :param annotation: The type annotation of the argument.
     :type annotation: Union[str, None]
-    '''
+    """
 
     def __init__(
         self,
@@ -68,7 +70,7 @@ class PythonFunctionArgument:
         if not name or not name.isidentifier() or keyword.iskeyword(name):
             raise InvalidPythonIdentifierError(
                 'invalid identifier',
-                identifier = name,
+                identifier=name,
             )
 
         # check whether the annotation is a valid annotation
@@ -77,7 +79,7 @@ class PythonFunctionArgument:
         if annotation is not None and not annotation:
             raise InvalidPythonAnnotationError(
                 'invalid annotation',
-                annotation = annotation,
+                annotation=annotation,
             )
 
         self.name = name
@@ -85,13 +87,17 @@ class PythonFunctionArgument:
         self.default = default
         self.annotation = annotation
 
-        if self.kind in (
-            PythonArgumentKind.VARARG,
-            PythonArgumentKind.KWARGS,
-        ) and self.default is not None:
+        if (
+            self.kind
+            in (
+                PythonArgumentKind.VARARG,
+                PythonArgumentKind.KWARGS,
+            )
+            and self.default is not None
+        ):
             raise PythonArgumentStructureError(
                 '* or ** arguments cannot have default values',
-                definition = self.signature_repr(),
+                definition=self.signature_repr(),
             )
 
     def __eq__(self, value: PythonFunctionArgument) -> bool:
@@ -105,20 +111,22 @@ class PythonFunctionArgument:
         )
 
     def __repr__(self) -> str:
-        return type(self).__name__ + repr((
-            self.name,
-            self.kind,
-            self.default,
-            self.annotation,
-        ))
+        return type(self).__name__ + repr(
+            (
+                self.name,
+                self.kind,
+                self.default,
+                self.annotation,
+            )
+        )
 
     def signature_repr(self) -> str:
-        '''
+        """
         Returns the function signature representation of the argument.
 
         :return: The string representation of the argument.
         :rtype: str
-        '''
+        """
 
         if self.kind == PythonArgumentKind.KWARGS:
             str_repr = '**'
@@ -137,48 +145,44 @@ class PythonFunctionArgument:
 
         return str_repr
 
+
 class PythonASTArgumentsListParser:
-    '''
+    """
     A parser for making ``PythonFunctionArgument`` objects from an
     ``ast.arguments`` arguments list.
 
     :param ast_arguments_list: The ``ast.arguments`` arguments list.
     :type ast_arguments_list: ast.arguments
-    '''
+    """
 
-    def __init__(self, ast_arguments_list: ast.arguments) ->  None:
+    def __init__(self, ast_arguments_list: ast.arguments) -> None:
         self.ast_arguments_list = ast_arguments_list
 
     def to_argument_list(self) -> list[PythonFunctionArgument]:
-        '''
+        """
         Converts the AST arguments list to a list of Python function
         argument objects.
 
         :return: The list of Python function argument objects.
         :rtype: list[PythonFunctionArgument]
-        '''
+        """
 
         defaults = (
             [
                 None
-                for _ in range(len(
-                    self.ast_arguments_list.posonlyargs +
-                    self.ast_arguments_list.args +
-                    self.ast_arguments_list.kwonlyargs
-                ) - len(
-                    self.ast_arguments_list.defaults
-                ) - len(
-                    self.ast_arguments_list.kw_defaults
-                ))
+                for _ in range(
+                    len(
+                        self.ast_arguments_list.posonlyargs
+                        + self.ast_arguments_list.args
+                        + self.ast_arguments_list.kwonlyargs
+                    )
+                    - len(self.ast_arguments_list.defaults)
+                    - len(self.ast_arguments_list.kw_defaults)
+                )
             ]
+            + [ast.unparse(d) for d in self.ast_arguments_list.defaults]
             + [
-                ast.unparse(d)
-                for d in self.ast_arguments_list.defaults
-            ]
-            + [
-                ast.unparse(d)
-                if d is not None
-                else None
+                ast.unparse(d) if d is not None else None
                 for d in self.ast_arguments_list.kw_defaults
             ]
         )
diff --git a/src/jcloud_docsgen/core/python/definitions.py b/src/jcloud_docsgen/core/python/definitions.py
index f54a98a..7c9ac1d 100644
--- a/src/jcloud_docsgen/core/python/definitions.py
+++ b/src/jcloud_docsgen/core/python/definitions.py
@@ -29,8 +29,9 @@ __all__ = [
     'PythonClassDefinition',
 ]
 
+
 def _python_docstring(doc: Union[str, None]) -> Union[PythonDocstring, None]:
-    '''
+    """
     Returns the PythonDocstring object if the docstring is a string and
     not ``None``.
 
@@ -39,12 +40,13 @@ def _python_docstring(doc: Union[str, None]) -> Union[PythonDocstring, None]:
 
     :return: The PythonDocstring object or ``None``.
     :rtype: Union[PythonDocstring, None]
-    '''
+    """
 
     return PythonDocstring(doc) if doc is not None else None
 
+
 class PythonDefinition:
-    '''
+    """
     A base class for Python definition (a class, function or asynchronous
     function definition) classes.
 
@@ -57,7 +59,7 @@ class PythonDefinition:
 
     :raises InvalidPythonIdentifierError: If the name is not a valid
                                           Python identifier.
-    '''
+    """
 
     def __init__(
         self,
@@ -68,7 +70,7 @@ class PythonDefinition:
         if keyword.iskeyword(name) or not name.isidentifier() or not name:
             raise InvalidPythonIdentifierError(
                 'invalid identifier',
-                identifier = name,
+                identifier=name,
             )
 
         assert_that_is_instance(doc, (PythonDocstring, types.NoneType))
@@ -89,12 +91,12 @@ class PythonDefinition:
 
     @classmethod
     def from_node(cls, node: ast.stmt) -> PythonDefinition:
-        '''
+        """
         From an AST node.
 
         :param node: The AST node.
         :type node: ast.stmt
-        '''
+        """
 
         return cls(
             node.name,
@@ -107,8 +109,9 @@ class PythonDefinition:
             return False
         return self._arg_list() == value._arg_list()
 
+
 class PythonFunctionDefinition(PythonDefinition):
-    '''
+    """
     A PythonDefinition subclass representing a Python function
     definition.
 
@@ -125,7 +128,7 @@ class PythonFunctionDefinition(PythonDefinition):
 
     :raises InvalidPythonIdentifierError: If the name is not a valid
                                           Python identifier.
-    '''
+    """
 
     def __init__(
         self,
@@ -150,12 +153,12 @@ class PythonFunctionDefinition(PythonDefinition):
 
     @classmethod
     def from_node(cls, node: ast.stmt) -> PythonFunctionDefinition:
-        '''
+        """
         From an AST node.
 
         :param node: The AST node.
         :type node: ast.stmt
-        '''
+        """
 
         return cls(
             node.name,
@@ -165,8 +168,9 @@ class PythonFunctionDefinition(PythonDefinition):
             [ast.unparse(d) for d in node.decorator_list],
         )
 
+
 class PythonAsyncFunctionDefinition(PythonFunctionDefinition):
-    '''
+    """
     A PythonDefinition subclass representing an asynchronous Python function
     definition.
 
@@ -183,10 +187,11 @@ class PythonAsyncFunctionDefinition(PythonFunctionDefinition):
 
     :raises InvalidPythonIdentifierError: If the name is not a valid
                                           Python identifier.
-    '''
+    """
+
 
 class PythonClassDefinition(PythonDefinition):
-    '''
+    """
     A PythonDefinition subclass representing a Python class definition.
 
     :param name: The name of the definition.
@@ -202,7 +207,7 @@ class PythonClassDefinition(PythonDefinition):
 
     :raises InvalidPythonIdentifierError: If the name is not a valid
                                           Python identifier.
-    '''
+    """
 
     def __init__(
         self,
@@ -227,12 +232,12 @@ class PythonClassDefinition(PythonDefinition):
 
     @classmethod
     def from_node(cls, node: ast.stmt) -> PythonClassDefinition:
-        '''
+        """
         From an AST node.
 
         :param node: The AST node.
         :type node: ast.stmt
-        '''
+        """
 
         return cls(
             node.name,
@@ -242,16 +247,12 @@ class PythonClassDefinition(PythonDefinition):
             [
                 PythonFunctionDefinition.from_node(expr)
                 if isinstance(expr, ast.FunctionDef)
-
                 else PythonAsyncFunctionDefinition.from_node(expr)
                 if isinstance(expr, ast.AsyncFunctionDef)
-
                 else PythonClassDefinition.from_node(expr)
-
                 for expr in node.body
                 if isinstance(
-                    expr,
-                    (ast.FunctionDef, ast.AsyncFunctionDef, ast.ClassDef)
+                    expr, (ast.FunctionDef, ast.AsyncFunctionDef, ast.ClassDef)
                 )
             ],
         )
diff --git a/src/jcloud_docsgen/core/python/docstrings.py b/src/jcloud_docsgen/core/python/docstrings.py
index 6405eab..51c7285 100644
--- a/src/jcloud_docsgen/core/python/docstrings.py
+++ b/src/jcloud_docsgen/core/python/docstrings.py
@@ -15,17 +15,16 @@
 from enum import Enum
 import docstring_parser
 
-__all__ = [
-    'PythonDocstring'
-]
+__all__ = ['PythonDocstring']
+
 
 class PythonDocstring:
-    '''
+    """
     Represents a Python docstring.
 
     :param docstring: The docstring as a string.
     :type docstring: str
-    '''
+    """
 
     def __init__(self, docstring: str) -> None:
         self.docstring = docstring
@@ -39,11 +38,11 @@ class PythonDocstring:
         return self.docstring == value.docstring
 
     def parse(self) -> docstring_parser.Docstring:
-        '''
+        """
         Parses the docstring.
 
         :return: The parsed docstring.
         :rtype: docstring_parser.Docstring
-        '''
+        """
 
         return docstring_parser.parse(self.docstring)
diff --git a/src/jcloud_docsgen/core/python/namespaces.py b/src/jcloud_docsgen/core/python/namespaces.py
index ad3218d..2dc70b7 100644
--- a/src/jcloud_docsgen/core/python/namespaces.py
+++ b/src/jcloud_docsgen/core/python/namespaces.py
@@ -27,20 +27,22 @@ __all__ = [
     'PythonModuleNamespace',
 ]
 
+
 class PythonNamespace:
-    '''
+    """
     The base class for all Python namespaces such as modules or packages.
 
     :param name: The name of the namespace.
     :type name: str
-    '''
+    """
+
     def __init__(self, name: str) -> None:
         assert_that_is_instance(name, str)
 
         if not name.strip():
             raise InvalidNamespaceError(
                 'invalid namespace',
-                namespace_identifier = name,
+                namespace_identifier=name,
             )
 
         self.name = name
@@ -48,6 +50,7 @@ class PythonNamespace:
     def __repr__(self) -> str:
         return f'{type(self).__name__}({self.name!r})'
 
+
 PythonPackageNamespaceDictType: TypeAlias = Dict[
     str,
     Union[
@@ -56,15 +59,16 @@ PythonPackageNamespaceDictType: TypeAlias = Dict[
     ],
 ]
 
+
 class PythonPackageNamespace(PythonNamespace):
-    '''
+    """
     A subclass of ``PythonNamespace`` for Python package namespaces.
 
     :param name: The name of the namespace.
     :type name: str
     :param sub_namespaces: The sub-namespaces.
     :type sub_namespaces: list[PythonNamespace]
-    '''
+    """
 
     def __init__(
         self,
@@ -78,7 +82,7 @@ class PythonPackageNamespace(PythonNamespace):
         self._sub_namespaces = sub_namespaces
 
     def namespace(self, sub_namespaces: List[str]) -> PythonNamespace:
-        '''
+        """
         Returns the namespace object with a specific identifier, such as
         ``['package', 'subpackage', 'module']``.
 
@@ -91,7 +95,7 @@ class PythonPackageNamespace(PythonNamespace):
 
         :return: The namespace.
         :rtype: PythonNamespace
-        '''
+        """
 
         if not sub_namespaces:
             raise InvalidNamespaceError('invalid namespace')
@@ -115,7 +119,7 @@ class PythonPackageNamespace(PythonNamespace):
         self,
         package: PythonPackageNamespace,
     ) -> PythonPackageNamespaceDictType:
-        '''
+        """
         Returns the names of all sub-namespaces of the specified package
         namespace and keeps the package structure.
 
@@ -124,7 +128,7 @@ class PythonPackageNamespace(PythonNamespace):
 
         :return: The names if all sub-namespaces.
         :rtype: PythonPackageNamespaceDictType
-        '''
+        """
 
         return {
             sn.name: (
@@ -136,13 +140,13 @@ class PythonPackageNamespace(PythonNamespace):
         }
 
     def sub_namespace_names(self) -> PythonPackageNamespaceDictType:
-        '''
+        """
         Returns the names of all sub-namespaces and keeps the package
         structure.
 
         :return: The names if all sub-namespaces.
         :rtype: PythonPackageNamespaceDictType
-        '''
+        """
 
         return self._sub_namespaces_names(self)
 
@@ -159,7 +163,7 @@ class PythonPackageNamespace(PythonNamespace):
         return type(self).__name__ + repr((self.name, self._sub_namespaces))
 
     def __getitem__(self, name: str) -> PythonNamespace:
-        '''
+        """
         Returns a namespace with the specified name.
 
         :param name: The name of the namespace
@@ -169,7 +173,7 @@ class PythonPackageNamespace(PythonNamespace):
 
         :return: The namespace
         :rtype: PythonNamespace
-        '''
+        """
 
         for sub in self._sub_namespaces:
             if sub.name == name:
@@ -177,11 +181,11 @@ class PythonPackageNamespace(PythonNamespace):
 
         raise NamespaceNotFoundError(
             'no such namespace',
-            namespace_identifier = name,
+            namespace_identifier=name,
         )
 
     def add(self, namespace: PythonNamespace) -> None:
-        '''
+        """
         Adds a namespace.
 
         :param namespace: The namespace to add.
@@ -190,12 +194,12 @@ class PythonPackageNamespace(PythonNamespace):
         :raises NamespaceExistsError: If a namespace with the name of the
                                       namespace that is attempted to add
                                       already exists.
-        '''
+        """
         try:
             self.__getitem__(namespace.name)
             raise NamespaceExistsError(
                 'namespace already exists',
-                namespace_identifier = namespace.name,
+                namespace_identifier=namespace.name,
             )
         except NamespaceNotFoundError:
             self._sub_namespaces.append(namespace)
@@ -204,13 +208,14 @@ class PythonPackageNamespace(PythonNamespace):
     def sub_namespaces(self) -> List[PythonNamespace]:
         return self._sub_namespaces
 
+
 class PythonModuleNamespace(PythonNamespace):
-    '''
+    """
     A subclass of ``PythonNamespace`` for Python module namespaces.
 
     :param name: The name of the namespace.
     :type name: str
-    '''
+    """
 
     def __init__(self, name: str) -> None:
         super().__init__(name)
diff --git a/src/jcloud_docsgen/exceptions.py b/src/jcloud_docsgen/exceptions.py
index ee2b51a..dc81f2e 100644
--- a/src/jcloud_docsgen/exceptions.py
+++ b/src/jcloud_docsgen/exceptions.py
@@ -12,10 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+
 class NamespaceError(ValueError):
-    '''
+    """
     Base class for namespace errors.
-    '''
+    """
+
     def __init__(self, *args: object, namespace_identifier: str = '') -> None:
         super().__init__(*args)
         self.namespace_identifier = namespace_identifier
@@ -25,23 +27,24 @@ class NamespaceError(ValueError):
             return ''
         else:
             return f'{self.args[0]}{
-                ": "
-                if self.namespace_identifier and self.args[0]
-                else ""
-            }{
-                self.namespace_identifier
-                if self.args[0]
-                else ""
-            }'
+                ": " if self.namespace_identifier and self.args[0] else ""
+            }{self.namespace_identifier if self.args[0] else ""}'
+
 
 class InvalidNamespaceError(NamespaceError): ...
+
+
 class NamespaceNotFoundError(NamespaceError): ...
+
+
 class NamespaceExistsError(NamespaceError): ...
 
+
 class PythonIdentifierError(ValueError):
-    '''
+    """
     Base class for Python identifier errors.
-    '''
+    """
+
     def __init__(self, *args: object, identifier: str = '') -> None:
         super().__init__(*args)
         self.identifier = identifier
@@ -51,21 +54,18 @@ class PythonIdentifierError(ValueError):
             return ''
         else:
             return f'{self.args[0]}{
-                ": "
-                if self.identifier and self.args[0]
-                else ""
-            }{
-                self.identifier
-                if self.args[0]
-                else ""
-            }'
+                ": " if self.identifier and self.args[0] else ""
+            }{self.identifier if self.args[0] else ""}'
+
 
 class InvalidPythonIdentifierError(PythonIdentifierError): ...
 
+
 class PythonAnnotationError(ValueError):
-    '''
+    """
     Base class for Python annotation errors.
-    '''
+    """
+
     def __init__(self, *args: object, annotation: str = '') -> None:
         super().__init__(*args)
         self.annotation = annotation
@@ -75,21 +75,18 @@ class PythonAnnotationError(ValueError):
             return ''
         else:
             return f'{self.args[0]}{
-                ": "
-                if self.annotation and self.args[0]
-                else ""
-            }{
-                self.annotation
-                if self.args[0]
-                else ""
-            }'
+                ": " if self.annotation and self.args[0] else ""
+            }{self.annotation if self.args[0] else ""}'
+
 
 class InvalidPythonAnnotationError(PythonAnnotationError): ...
 
+
 class PythonDefinitionError(ValueError):
-    '''
+    """
     Base class for Python definition errors.
-    '''
+    """
+
     def __init__(self, *args: object, definition: str = '') -> None:
         super().__init__(*args)
         self.definition = definition
@@ -99,13 +96,8 @@ class PythonDefinitionError(ValueError):
             return ''
         else:
             return f'{self.args[0]}{
-                ": "
-                if self.definition and self.args[0]
-                else ""
-            }{
-                self.definition
-                if self.args[0]
-                else ""
-            }'
+                ": " if self.definition and self.args[0] else ""
+            }{self.definition if self.args[0] else ""}'
+
 
 class PythonArgumentStructureError(PythonDefinitionError): ...
diff --git a/src/jcloud_docsgen/utils.py b/src/jcloud_docsgen/utils.py
index d602602..504c180 100644
--- a/src/jcloud_docsgen/utils.py
+++ b/src/jcloud_docsgen/utils.py
@@ -12,9 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-'''
+"""
 The utilities for jcloud_docsgen
-'''
+"""
 
 import pathlib
 import os
@@ -27,15 +27,17 @@ try:
 except ImportError:
     from typing_extensions import deprecated
 
+
 @deprecated('Use pathlib.Path instead.')
 class ExistingDirectory(pathlib.Path):
-    '''
+    """
     pathlib.Path subclass that is a directory.
 
     ExistingDirectory represents a filesystem path but it also checks
     whether the path exists and is not a file but a directory. It
     inherits from pathlib.Path.
-    '''
+    """
+
     def __init__(self, path, *args, **kwargs) -> None:
         if not os.path.exists(path):
             raise FileNotFoundError(
@@ -47,15 +49,17 @@ class ExistingDirectory(pathlib.Path):
             raise NotADirectoryError(errno.ENOTDIR, 'not a directory', path)
         super().__init__(*(path, *args), **kwargs)
 
+
 @deprecated('Use pathlib.Path instead.')
 class ExistingFile(pathlib.Path):
-    '''
+    """
     pathlib.Path subclass that is a file.
 
     ExistingFile represents a filesystem path but it also checks whether
     the path exists and is not a directory but a file. It inherits from
     pathlib.Path.
-    '''
+    """
+
     def __init__(self, path, *args, **kwargs) -> None:
         if not os.path.exists(path):
             raise FileNotFoundError(
@@ -67,8 +71,9 @@ class ExistingFile(pathlib.Path):
             raise IsADirectoryError(errno.EISDIR, 'is a directory', path)
         super().__init__(*(path, *args), **kwargs)
 
+
 def _quote(string: str, quotation_mark: str) -> str:
-    '''
+    """
     Quotes a string.
 
     :param string: The string to quote
@@ -78,16 +83,17 @@ def _quote(string: str, quotation_mark: str) -> str:
 
     :return: The quoted string
     :rtype: str
-    '''
+    """
 
     return quotation_mark + string + quotation_mark
 
+
 def human_readable_list(
     ls: list,
     final_separator: str = 'and',
     quotation_mark: str = '',
 ) -> str:
-    '''
+    """
     Generates a human-readable list from a list.
 
     :param ls: The list.
@@ -101,7 +107,7 @@ def human_readable_list(
 
     :return: The human-readable list.
     :rtype: str
-    '''
+    """
 
     # empty list
     if not ls:
@@ -111,18 +117,26 @@ def human_readable_list(
     if len(ls) == 1:
         return _quote(str(ls[0]), quotation_mark)
 
-    return ', '.join(
-        [
-            _quote(
-                str(obj),
-                quotation_mark
-            ) # quote the string representation of the object
-            for obj in ls[:-1] # do not include the last element of the list
-        ],
-    ) + ' ' + final_separator + ' ' + _quote(str(ls[-1]), quotation_mark)
+    return (
+        ', '.join(
+            [
+                _quote(
+                    str(obj), quotation_mark
+                )  # quote the string representation of the object
+                for obj in ls[
+                    :-1
+                ]  # do not include the last element of the list
+            ],
+        )
+        + ' '
+        + final_separator
+        + ' '
+        + _quote(str(ls[-1]), quotation_mark)
+    )
+
 
 def _list_type_names(types: list[type]) -> list[str]:
-    '''
+    """
     Converts a list of types into a list of their names (``__name__``
     attribute)
 
@@ -131,10 +145,11 @@ def _list_type_names(types: list[type]) -> list[str]:
 
     :return: The list of the names of the types
     :rtype: list[str]
-    '''
+    """
 
     return [tp.__name__ for tp in types]
 
+
 def assert_that_is_instance(
     obj: object,
     class_or_tuple: Union[
@@ -145,8 +160,8 @@ def assert_that_is_instance(
 ) -> None:
     if not isinstance(class_or_tuple, Union[type, types.UnionType, tuple]):
         raise TypeError(
-            f'class_or_tuple: expected \'Union[type, types.UnionType, '
-            f'tuple[type, ...]]\', \'got {type(class_or_tuple).__name__}\'',
+            f"class_or_tuple: expected 'Union[type, types.UnionType, "
+            f"tuple[type, ...]]', 'got {type(class_or_tuple).__name__}'",
         )
     if not isinstance(obj, class_or_tuple):
         if isinstance(class_or_tuple, (tuple, types.UnionType)):
@@ -157,18 +172,21 @@ def assert_that_is_instance(
             else:
                 exception_message_expected = ''
             exception_message_expected += human_readable_list(
-                _list_type_names(class_or_tuple), 'or', '\'',
+                _list_type_names(class_or_tuple),
+                'or',
+                "'",
             )
         else:
-            exception_message_expected = '\'' + class_or_tuple.__name__ + '\''
+            exception_message_expected = "'" + class_or_tuple.__name__ + "'"
         raise TypeError(
-            f'expected {exception_message_expected}, got \'{type(
-                obj
-            ).__name__}\'',
+            f"expected {exception_message_expected}, got '{
+                type(obj).__name__
+            }'",
         )
 
+
 def non_empty_str(value: Union[str, None]) -> Union[str, None]:
-    '''
+    """
     Returns the value or ``None``.
 
     Returns the value if it is not empty and not `Ǹone``; otherwise,
@@ -181,7 +199,7 @@ def non_empty_str(value: Union[str, None]) -> Union[str, None]:
 
     :return: The value or ``None``.
     :rtype: Union[str, None]
-    '''
+    """
 
     if value is None:
         return None
@@ -191,11 +209,12 @@ def non_empty_str(value: Union[str, None]) -> Union[str, None]:
 
     return value
 
+
 def get_relative_path_segments(
     path: pathlib.Path,
     root: pathlib.Path,
 ) -> list[str]:
-    '''
+    """
     Returns the path segments relative to ``root``.
 
     :param path: The path.
@@ -205,7 +224,7 @@ def get_relative_path_segments(
 
     :return: The path segments relative to ``root``.
     :rtype: list[str]
-    '''
+    """
 
     return list(
         path.resolve()
diff --git a/tests/integration/cli/test_cli.py b/tests/integration/cli/test_cli.py
index 8e56a32..17a27ec 100644
--- a/tests/integration/cli/test_cli.py
+++ b/tests/integration/cli/test_cli.py
@@ -15,6 +15,7 @@
 import subprocess
 import sys
 
+
 def test_cli():
     result = subprocess.run(
         [
@@ -23,12 +24,13 @@ def test_cli():
             'jcloud_docsgen',
             '--help',
         ],
-        capture_output = True,
-        text = True,
+        capture_output=True,
+        text=True,
     )
     stdout = result.stdout.lower()
-    assert \
-        'usage:' in stdout and \
-        'positional arguments' in stdout and \
-        'options' in stdout and \
-        '--help' in stdout
+    assert (
+        'usage:' in stdout
+        and 'positional arguments' in stdout
+        and 'options' in stdout
+        and '--help' in stdout
+    )
diff --git a/tests/unit/cli/python_project/project/src/pkg/module.py b/tests/unit/cli/python_project/project/src/pkg/module.py
index fd01ebd..3deb2b6 100644
--- a/tests/unit/cli/python_project/project/src/pkg/module.py
+++ b/tests/unit/cli/python_project/project/src/pkg/module.py
@@ -1,5 +1,5 @@
 def f(a: int = 42) -> str:
-    '''
+    """
     Does something.
 
     :param a: A parameter.
@@ -7,5 +7,5 @@ def f(a: int = 42) -> str:
 
     :return: A string.
     :rtype: str
-    '''
+    """
     ...
diff --git a/tests/unit/cli/test_parser.py b/tests/unit/cli/test_parser.py
index 7666e59..9ababcb 100644
--- a/tests/unit/cli/test_parser.py
+++ b/tests/unit/cli/test_parser.py
@@ -15,20 +15,28 @@
 import pytest
 from jcloud_docsgen.cli.cli import create_argument_parser
 
-@pytest.mark.parametrize('lang', [
-    'javascript',
-    'Python',
-    'PYTHON',
-])
+
+@pytest.mark.parametrize(
+    'lang',
+    [
+        'javascript',
+        'Python',
+        'PYTHON',
+    ],
+)
 def test_language_error(lang):
     parser = create_argument_parser()
 
     with pytest.raises(SystemExit):
         parser.parse_args([lang])
 
-@pytest.mark.parametrize('lang', [
-    'python',
-])
+
+@pytest.mark.parametrize(
+    'lang',
+    [
+        'python',
+    ],
+)
 def test_language_success(lang):
     parser = create_argument_parser()
     parser.parse_args([lang])
diff --git a/tests/unit/cli/test_python.py b/tests/unit/cli/test_python.py
index 9b11ff0..c858770 100644
--- a/tests/unit/cli/test_python.py
+++ b/tests/unit/cli/test_python.py
@@ -17,152 +17,169 @@ import pytest
 from jcloud_docsgen.cli.cli import create_argument_parser, main as cli_main
 from jcloud_docsgen.cli.languages.python import parse_sections_list
 from jcloud_docsgen.core.python import (
-    PythonDefinitionDocumentationIncludeSections
+    PythonDefinitionDocumentationIncludeSections,
 )
 
-@pytest.mark.parametrize('include,exclude,expected', [
-    (
-        [],
-        [],
-        PythonDefinitionDocumentationIncludeSections(
-            signature = False,
-            returns = False,
-            params = False,
-            exceptions = False,
-            examples = False,
-            docstring = False,
-            bases = False,
-            decorators = False,
-            class_body = False,
+
+@pytest.mark.parametrize(
+    'include,exclude,expected',
+    [
+        (
+            [],
+            [],
+            PythonDefinitionDocumentationIncludeSections(
+                signature=False,
+                returns=False,
+                params=False,
+                exceptions=False,
+                examples=False,
+                docstring=False,
+                bases=False,
+                decorators=False,
+                class_body=False,
+            ),
         ),
-    ),
-    (
-        [],
-        ['signature'],
-        PythonDefinitionDocumentationIncludeSections(
-            signature = False,
-            returns = False,
-            params = False,
-            exceptions = False,
-            examples = False,
-            docstring = False,
-            bases = False,
-            decorators = False,
-            class_body = False,
+        (
+            [],
+            ['signature'],
+            PythonDefinitionDocumentationIncludeSections(
+                signature=False,
+                returns=False,
+                params=False,
+                exceptions=False,
+                examples=False,
+                docstring=False,
+                bases=False,
+                decorators=False,
+                class_body=False,
+            ),
         ),
-    ),
-    (
-        ['signature'],
-        ['signature'],
-        PythonDefinitionDocumentationIncludeSections(
-            signature = False,
-            returns = False,
-            params = False,
-            exceptions = False,
-            examples = False,
-            docstring = False,
-            bases = False,
-            decorators = False,
-            class_body = False,
+        (
+            ['signature'],
+            ['signature'],
+            PythonDefinitionDocumentationIncludeSections(
+                signature=False,
+                returns=False,
+                params=False,
+                exceptions=False,
+                examples=False,
+                docstring=False,
+                bases=False,
+                decorators=False,
+                class_body=False,
+            ),
         ),
-    ),
-    (
-        ['signature'],
-        [],
-        PythonDefinitionDocumentationIncludeSections(
-            signature = True,
-            returns = False,
-            params = False,
-            exceptions = False,
-            examples = False,
-            docstring = False,
-            bases = False,
-            decorators = False,
-            class_body = False,
+        (
+            ['signature'],
+            [],
+            PythonDefinitionDocumentationIncludeSections(
+                signature=True,
+                returns=False,
+                params=False,
+                exceptions=False,
+                examples=False,
+                docstring=False,
+                bases=False,
+                decorators=False,
+                class_body=False,
+            ),
         ),
-    ),
-    (
-        None,
-        [],
-        PythonDefinitionDocumentationIncludeSections(),
-    ),
-    (
-        ['signature', 'exceptions', 'bases', 'class_body'],
-        ['signature', 'bases'],
-        PythonDefinitionDocumentationIncludeSections(
-            signature = False,
-            returns = False,
-            params = False,
-            exceptions = True,
-            examples = False,
-            docstring = False,
-            bases = False,
-            decorators = False,
-            class_body = True,
+        (
+            None,
+            [],
+            PythonDefinitionDocumentationIncludeSections(),
         ),
-    ),
-    (
-        None,
-        ['params', 'docstring'],
-        PythonDefinitionDocumentationIncludeSections(
-            signature = True,
-            returns = True,
-            params = False,
-            exceptions = True,
-            examples = True,
-            docstring = False,
-            bases = True,
-            decorators = True,
-            class_body = True,
+        (
+            ['signature', 'exceptions', 'bases', 'class_body'],
+            ['signature', 'bases'],
+            PythonDefinitionDocumentationIncludeSections(
+                signature=False,
+                returns=False,
+                params=False,
+                exceptions=True,
+                examples=False,
+                docstring=False,
+                bases=False,
+                decorators=False,
+                class_body=True,
+            ),
         ),
-    )
-])
+        (
+            None,
+            ['params', 'docstring'],
+            PythonDefinitionDocumentationIncludeSections(
+                signature=True,
+                returns=True,
+                params=False,
+                exceptions=True,
+                examples=True,
+                docstring=False,
+                bases=True,
+                decorators=True,
+                class_body=True,
+            ),
+        ),
+    ],
+)
 def test_parse_sections_list(include, exclude, expected):
     assert parse_sections_list(include, exclude) == expected
 
+
 def test_sections_error():
     parser = create_argument_parser()
 
     with pytest.raises(SystemExit):
-        parser.parse_args([
-            'python',
-            '-s',
-            'param', # correct: `params`
-        ])
+        parser.parse_args(
+            [
+                'python',
+                '-s',
+                'param',  # correct: `params`
+            ]
+        )
 
     with pytest.raises(SystemExit):
-        parser.parse_args([
-            'python',
-            '-s',
-            'params',
-            'docstrng', # correct: `docstring`
-        ])
+        parser.parse_args(
+            [
+                'python',
+                '-s',
+                'params',
+                'docstrng',  # correct: `docstring`
+            ]
+        )
+
 
 def test_sections_success():
     parser = create_argument_parser()
 
-    parser.parse_args([
-        'python',
-        '-s',
-        'params',
-    ])
-    parser.parse_args([
-        'python',
-        '-s',
-        'params',
-        'docstring',
-    ])
+    parser.parse_args(
+        [
+            'python',
+            '-s',
+            'params',
+        ]
+    )
+    parser.parse_args(
+        [
+            'python',
+            '-s',
+            'params',
+            'docstring',
+        ]
+    )
+
 
 def test_docs_generation(expectdir):
     with expectdir('python_project') as output_dir:
         output_dir: pathlib.Path
         input_dir = pathlib.Path(__file__).parent / 'python_project/project'
-        cli_main([
-            'python',
-            '-s',
-            'params',
-            'docstring',
-            '-HTo',
-            str(output_dir),
-            str(input_dir),
-        ])
+        cli_main(
+            [
+                'python',
+                '-s',
+                'params',
+                'docstring',
+                '-HTo',
+                str(output_dir),
+                str(input_dir),
+            ]
+        )
diff --git a/tests/unit/core/python/_core/test_PythonDefinitionDocumentationGenerator.py b/tests/unit/core/python/_core/test_PythonDefinitionDocumentationGenerator.py
index 45d9344..52de56d 100644
--- a/tests/unit/core/python/_core/test_PythonDefinitionDocumentationGenerator.py
+++ b/tests/unit/core/python/_core/test_PythonDefinitionDocumentationGenerator.py
@@ -28,8 +28,9 @@ from src.jcloud_docsgen.core.python.arguments import (
 from src.jcloud_docsgen.core.python.docstrings import PythonDocstring
 import pytest
 
+
 def _signature_section(signature: str) -> str:
-    '''
+    """
     The definition documentation signature section of the specified
     signature.
 
@@ -38,218 +39,224 @@ def _signature_section(signature: str) -> str:
 
     :return: The definition documentation signature section.
     :rtype: str
-    '''
+    """
 
-    return f'''## Function signature
+    return f"""## Function signature
 
 ```python
 {signature}
-```'''
+```"""
 
-@pytest.mark.parametrize('definition_documentation_generator,expected', [
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                [],
-            ),
-        ),
-        'a()'
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                'str',
-                None,
-                [],
-            ),
-        ),
-        'a() -> str'
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    ),
-                ],
-                'str',
-                None,
-                [],
-            ),
-        ),
-        'a(a) -> str',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a', [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        'str',
-                    ),
-                ],
-                'str',
-                None,
-                [],
-            ),
-        ),
-        'a(a: str) -> str',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        '\'42\'',
-                        None,
-                    )
-                ],
-                'str',
-                None,
-                [],
-            ),
-        ),
-        'a(a = \'42\') -> str',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        '\'42\'',
-                        'str',
-                    )
-                ],
-                'str',
-                None,
-                [],
-            ),
-        ),
-        'a(a: str = \'42\') -> str',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        '\'42\'',
-                        'str',
-                    )
-                ],
-                'str',
-                None,
-                [],
-            ),
-        ),
-        'a(a: str = \'42\', /) -> str',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        None,
-                    )
-                ],
-                'str',
-                None,
-                [],
-            ),
-        ),
-        'a(a, /) -> str',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        None,
-                    )
-                ],
-                None,
-                None,
-                [],
-            ),
-        ),
-        'a(a, /)',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                '__init__',
-                [
-                    PythonFunctionArgument(
-                        'self',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'definition',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        'PythonDefinition',
-                    ),
-                    PythonFunctionArgument(
-                        'allow_html',
-                        PythonArgumentKind.KEYWORD_ONLY,
-                        'True',
-                        'bool',
-                    ),
-                    PythonFunctionArgument(
-                        'level',
-                        PythonArgumentKind.KEYWORD_ONLY,
-                        '1',
-                        'int',
-                    ),
-                ],
-                'None',
-                None,
-                [],
+
+@pytest.mark.parametrize(
+    'definition_documentation_generator,expected',
+    [
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    [],
+                ),
             ),
+            'a()',
         ),
         (
-            '__init__(self, definition: PythonDefinition, *, '
-            'allow_html: bool = True, level: int = 1) -> None'
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    'str',
+                    None,
+                    [],
+                ),
+            ),
+            'a() -> str',
         ),
-    ),
-])
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        ),
+                    ],
+                    'str',
+                    None,
+                    [],
+                ),
+            ),
+            'a(a) -> str',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            'str',
+                        ),
+                    ],
+                    'str',
+                    None,
+                    [],
+                ),
+            ),
+            'a(a: str) -> str',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            "'42'",
+                            None,
+                        )
+                    ],
+                    'str',
+                    None,
+                    [],
+                ),
+            ),
+            "a(a = '42') -> str",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            "'42'",
+                            'str',
+                        )
+                    ],
+                    'str',
+                    None,
+                    [],
+                ),
+            ),
+            "a(a: str = '42') -> str",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            "'42'",
+                            'str',
+                        )
+                    ],
+                    'str',
+                    None,
+                    [],
+                ),
+            ),
+            "a(a: str = '42', /) -> str",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            None,
+                        )
+                    ],
+                    'str',
+                    None,
+                    [],
+                ),
+            ),
+            'a(a, /) -> str',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            None,
+                        )
+                    ],
+                    None,
+                    None,
+                    [],
+                ),
+            ),
+            'a(a, /)',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    '__init__',
+                    [
+                        PythonFunctionArgument(
+                            'self',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'definition',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            'PythonDefinition',
+                        ),
+                        PythonFunctionArgument(
+                            'allow_html',
+                            PythonArgumentKind.KEYWORD_ONLY,
+                            'True',
+                            'bool',
+                        ),
+                        PythonFunctionArgument(
+                            'level',
+                            PythonArgumentKind.KEYWORD_ONLY,
+                            '1',
+                            'int',
+                        ),
+                    ],
+                    'None',
+                    None,
+                    [],
+                ),
+            ),
+            (
+                '__init__(self, definition: PythonDefinition, *, '
+                'allow_html: bool = True, level: int = 1) -> None'
+            ),
+        ),
+    ],
+)
 def test_PythonDefinitionDocumentationGenerator_generate_signature(
     definition_documentation_generator,
     expected,
 ):
     assert definition_documentation_generator.generate_signature() == expected
 
+
 @pytest.mark.parametrize(
     (
         'definition_documentation_generator,exp'
@@ -280,205 +287,209 @@ def test_PythonDefinitionDocumentationGenerator_generate_signature_exceptions(
         definition_documentation_generator.generate_signature()
     assert str(exc_info.value) == expected_exception_msg
 
-@pytest.mark.parametrize('definition_documentation_generator,expected', [
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                [],
-            ),
-        ),
-        'a()',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                'str',
-                None,
-                [],
-            ),
-        ),
-        'a() -> str',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    ),
-                ],
-                'str',
-                None,
-                [],
-            ),
-        ),
-        'a(a) -> str',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        'str',
-                    ),
-                ],
-                'str',
-                None,
-                [],
-            ),
-        ),
-        'a(a: str) -> str',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        '\'42\'',
-                        None,
-                    ),
-                ],
-                'str',
-                None,
-                [],
-            ),
-        ),
-        'a(a = \'42\') -> str',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        '\'42\'',
-                        'str',
-                    ),
-                ],
-                'str',
-                None,
-                [],
-            ),
-        ),
-        'a(a: str = \'42\') -> str',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        '\'42\'',
-                        'str',
-                    ),
-                ],
-                'str',
-                None,
-                [],
-            ),
-        ),
-        'a(a: str = \'42\', /) -> str',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        None,
-                    ),
-                ],
-                'str',
-                None,
-                [],
-            ),
-        ),
-        'a(a, /) -> str',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        None,
-                    ),
-                ],
-                None,
-                None,
-                [],
-            ),
-        ),
-        'a(a, /)',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                '__init__',
-                [
-                    PythonFunctionArgument(
-                        'self',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'definition',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        'PythonDefinition',
-                    ),
-                    PythonFunctionArgument(
-                        'allow_html',
-                        PythonArgumentKind.KEYWORD_ONLY,
-                        'True',
-                        'bool',
-                    ),
-                    PythonFunctionArgument(
-                        'level',
-                        PythonArgumentKind.KEYWORD_ONLY,
-                        '1',
-                        'int',
-                    ),
-                ],
-                'None',
-                None,
-                [],
+
+@pytest.mark.parametrize(
+    'definition_documentation_generator,expected',
+    [
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    [],
+                ),
             ),
+            'a()',
         ),
         (
-            '__init__(self, definition: PythonDefinition, *, '
-            'allow_html: bool = True, level: int = 1) -> None'
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    'str',
+                    None,
+                    [],
+                ),
+            ),
+            'a() -> str',
         ),
-    ),
-])
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        ),
+                    ],
+                    'str',
+                    None,
+                    [],
+                ),
+            ),
+            'a(a) -> str',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            'str',
+                        ),
+                    ],
+                    'str',
+                    None,
+                    [],
+                ),
+            ),
+            'a(a: str) -> str',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            "'42'",
+                            None,
+                        ),
+                    ],
+                    'str',
+                    None,
+                    [],
+                ),
+            ),
+            "a(a = '42') -> str",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            "'42'",
+                            'str',
+                        ),
+                    ],
+                    'str',
+                    None,
+                    [],
+                ),
+            ),
+            "a(a: str = '42') -> str",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            "'42'",
+                            'str',
+                        ),
+                    ],
+                    'str',
+                    None,
+                    [],
+                ),
+            ),
+            "a(a: str = '42', /) -> str",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            None,
+                        ),
+                    ],
+                    'str',
+                    None,
+                    [],
+                ),
+            ),
+            'a(a, /) -> str',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            None,
+                        ),
+                    ],
+                    None,
+                    None,
+                    [],
+                ),
+            ),
+            'a(a, /)',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    '__init__',
+                    [
+                        PythonFunctionArgument(
+                            'self',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'definition',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            'PythonDefinition',
+                        ),
+                        PythonFunctionArgument(
+                            'allow_html',
+                            PythonArgumentKind.KEYWORD_ONLY,
+                            'True',
+                            'bool',
+                        ),
+                        PythonFunctionArgument(
+                            'level',
+                            PythonArgumentKind.KEYWORD_ONLY,
+                            '1',
+                            'int',
+                        ),
+                    ],
+                    'None',
+                    None,
+                    [],
+                ),
+            ),
+            (
+                '__init__(self, definition: PythonDefinition, *, '
+                'allow_html: bool = True, level: int = 1) -> None'
+            ),
+        ),
+    ],
+)
 def test_PythonDefinitionDocumentationGenerator__generate_signature_section(
     definition_documentation_generator,
     expected,
@@ -488,253 +499,254 @@ def test_PythonDefinitionDocumentationGenerator__generate_signature_section(
         == _signature_section(expected)
     )
 
-@pytest.mark.parametrize('definition_documentation_generator,expected', [
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                [],
-            ),
-            allow_html = False,
-            skip_empty_sections = True,
-        ),
-        '',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring(''),
-                [],
-            ),
-            allow_html = False,
-            skip_empty_sections = True,
-        ),
-        '',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('a'),
-                [],
-            ),
-            allow_html = False,
-            skip_empty_sections = True,
-        ),
-        '## Docstring\n\na',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('a\nb'),
-                [],
-            ),
-            allow_html = False,
-            skip_empty_sections = True,
-        ),
-        '## Docstring\n\na\nb',
-    ),
 
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                [],
+@pytest.mark.parametrize(
+    'definition_documentation_generator,expected',
+    [
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    [],
+                ),
+                allow_html=False,
+                skip_empty_sections=True,
             ),
-            allow_html = True,
-            skip_empty_sections = True,
-        ),
-        '',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring(''),
-                [],
-            ),
-            allow_html = True,
-            skip_empty_sections = True,
-        ),
-        '',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('a'),
-                [],
-            ),
-            allow_html = True,
-            skip_empty_sections = True,
+            '',
         ),
         (
-            '<details><summary><h2 style="display:inl'
-            'ine">Docstring</h2></summary>a</details>'
-        ),
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('a\nb'),
-                [],
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring(''),
+                    [],
+                ),
+                allow_html=False,
+                skip_empty_sections=True,
             ),
-            allow_html = True,
-            skip_empty_sections = True,
+            '',
         ),
         (
-            '<details><summary><h2 style="display:inlin'
-            'e">Docstring</h2></summary>a\nb</details>'
-        ),
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                [],
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('a'),
+                    [],
+                ),
+                allow_html=False,
+                skip_empty_sections=True,
             ),
-            allow_html = False,
-            skip_empty_sections = False,
-        ),
-        '## Docstring\n\nThere is no docstring to show.',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring(''),
-                [],
-            ),
-            allow_html = False,
-            skip_empty_sections = False,
-        ),
-        '## Docstring\n\nThere is no docstring to show.',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('a'),
-                [],
-            ),
-            allow_html = False,
-            skip_empty_sections = False,
-        ),
-        '## Docstring\n\na',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('a\nb'),
-                [],
-            ),
-            allow_html = False,
-            skip_empty_sections = False,
-        ),
-        '## Docstring\n\na\nb',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                [],
-            ),
-            allow_html = True,
-            skip_empty_sections = False,
+            '## Docstring\n\na',
         ),
         (
-            '<details><summary><h2 style="display:inline">Docstring<'
-            '/h2></summary>There is no docstring to show.</details>'
-        ),
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring(''),
-                [],
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('a\nb'),
+                    [],
+                ),
+                allow_html=False,
+                skip_empty_sections=True,
             ),
-            allow_html = True,
-            skip_empty_sections = False,
+            '## Docstring\n\na\nb',
         ),
         (
-            '<details><summary><h2 style="display:inline">Docstring<'
-            '/h2></summary>There is no docstring to show.</details>'
-        ),
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('a'),
-                [],
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    [],
+                ),
+                allow_html=True,
+                skip_empty_sections=True,
             ),
-            allow_html = True,
-            skip_empty_sections = False,
+            '',
         ),
         (
-            '<details><summary><h2 style="display:inl'
-            'ine">Docstring</h2></summary>a</details>'
-        ),
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('a\nb'),
-                [],
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring(''),
+                    [],
+                ),
+                allow_html=True,
+                skip_empty_sections=True,
             ),
-            allow_html = True,
-            skip_empty_sections = False,
+            '',
         ),
         (
-            '<details><summary><h2 style="display:inlin'
-            'e">Docstring</h2></summary>a\nb</details>'
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('a'),
+                    [],
+                ),
+                allow_html=True,
+                skip_empty_sections=True,
+            ),
+            (
+                '<details><summary><h2 style="display:inl'
+                'ine">Docstring</h2></summary>a</details>'
+            ),
         ),
-    ),
-])
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('a\nb'),
+                    [],
+                ),
+                allow_html=True,
+                skip_empty_sections=True,
+            ),
+            (
+                '<details><summary><h2 style="display:inlin'
+                'e">Docstring</h2></summary>a\nb</details>'
+            ),
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    [],
+                ),
+                allow_html=False,
+                skip_empty_sections=False,
+            ),
+            '## Docstring\n\nThere is no docstring to show.',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring(''),
+                    [],
+                ),
+                allow_html=False,
+                skip_empty_sections=False,
+            ),
+            '## Docstring\n\nThere is no docstring to show.',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('a'),
+                    [],
+                ),
+                allow_html=False,
+                skip_empty_sections=False,
+            ),
+            '## Docstring\n\na',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('a\nb'),
+                    [],
+                ),
+                allow_html=False,
+                skip_empty_sections=False,
+            ),
+            '## Docstring\n\na\nb',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    [],
+                ),
+                allow_html=True,
+                skip_empty_sections=False,
+            ),
+            (
+                '<details><summary><h2 style="display:inline">Docstring<'
+                '/h2></summary>There is no docstring to show.</details>'
+            ),
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring(''),
+                    [],
+                ),
+                allow_html=True,
+                skip_empty_sections=False,
+            ),
+            (
+                '<details><summary><h2 style="display:inline">Docstring<'
+                '/h2></summary>There is no docstring to show.</details>'
+            ),
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('a'),
+                    [],
+                ),
+                allow_html=True,
+                skip_empty_sections=False,
+            ),
+            (
+                '<details><summary><h2 style="display:inl'
+                'ine">Docstring</h2></summary>a</details>'
+            ),
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('a\nb'),
+                    [],
+                ),
+                allow_html=True,
+                skip_empty_sections=False,
+            ),
+            (
+                '<details><summary><h2 style="display:inlin'
+                'e">Docstring</h2></summary>a\nb</details>'
+            ),
+        ),
+    ],
+)
 def test_PythonDefinitionDocumentationGenerator__generate_docstring_section(
     definition_documentation_generator,
     expected,
@@ -744,368 +756,366 @@ def test_PythonDefinitionDocumentationGenerator__generate_docstring_section(
         == expected
     )
 
-@pytest.mark.parametrize('definition_documentation_generator,expected', [
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                [],
-            ),
-        ),
-        '',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                [],
-            ),
-            skip_empty_sections = False,
-        ),
-        '## Parameters\n\nThis function takes no parameters.',
-    ),
 
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    )
-                ],
-                None,
-                None,
-                [],
-            ),
-        ),
-        '''## Parameters
-
-- Parameter: `a`
-
-  Type: --
-
-  Kind: normal
-
-  Default value: --
-
-  Description: --''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        '1',
-                        None,
-                    )
-                ],
-                None,
-                None,
-                [],
-            ),
-        ),
-        '''## Parameters
-
-- Parameter: `a`
-
-  Type: --
-
-  Kind: normal
-
-  Default value: `1`
-
-  Description: --''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        'int',
-                    )
-                ],
-                None,
-                None,
-                [],
-            ),
-        ),
-        '''## Parameters
-
-- Parameter: `a`
-
-  Type: `int`
-
-  Kind: normal
-
-  Default value: --
-
-  Description: --''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        '1',
-                        'int',
-                    )
-                ],
-                None,
-                None,
-                [],
-            ),
-        ),
-        '''## Parameters
-
-- Parameter: `a`
-
-  Type: `int`
-
-  Kind: normal
-
-  Default value: `1`
-
-  Description: --''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'b',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        None,
-                    )
-                ],
-                None,
-                None,
-                [],
-            ),
-        ),
-        '''## Parameters
-
-- Parameter: `a`
-
-  Type: --
-
-  Kind: normal
-
-  Default value: --
-
-  Description: --
-
-- Parameter: `b`
-
-  Type: --
-
-  Kind: positional-only
-
-  Default value: --
-
-  Description: --''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'b',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        None,
-                    ),
-                ],
-                None,
-                PythonDocstring(':param b: a parameter\n:type b: int'),
-                [],
-            ),
-        ),
-        '''## Parameters
-
-- Parameter: `a`
-
-  Type: --
-
-  Kind: normal
-
-  Default value: --
-
-  Description: --
-
-- Parameter: `b`
-
-  Type: `int`
-
-  Kind: positional-only
-
-  Default value: --
-
-  Description: a parameter''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'b',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        None,
-                    ),
-                ],
-                None,
-                PythonDocstring(
-                    ':param b:\n:type b: int',
+@pytest.mark.parametrize(
+    'definition_documentation_generator,expected',
+    [
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    [],
                 ),
-                [],
             ),
-        ), '''## Parameters
-
-- Parameter: `a`
-
-  Type: --
-
-  Kind: normal
-
-  Default value: --
-
-  Description: --
-
-- Parameter: `b`
-
-  Type: `int`
-
-  Kind: positional-only
-
-  Default value: --
-
-  Description: --''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'b',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        None,
-                    ),
-                ],
-                None,
-                PythonDocstring(':param b:   \n:type b: int'),
-                [],
-            ),
-        ), '''## Parameters
-
-- Parameter: `a`
-
-  Type: --
-
-  Kind: normal
-
-  Default value: --
-
-  Description: --
-
-- Parameter: `b`
-
-  Type: `int`
-
-  Kind: positional-only
-
-  Default value: --
-
-  Description: --''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a', [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'b',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        None,
-                    ),
-                ],
-                None,
-                PythonDocstring(':param b: a parameter\n:type b: int'),
-                [],
-            ),
-            allow_tables = True,
+            '',
         ),
-        '''## Parameters
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    [],
+                ),
+                skip_empty_sections=False,
+            ),
+            '## Parameters\n\nThis function takes no parameters.',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        )
+                    ],
+                    None,
+                    None,
+                    [],
+                ),
+            ),
+            """## Parameters
+
+- Parameter: `a`
+
+  Type: --
+
+  Kind: normal
+
+  Default value: --
+
+  Description: --""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            '1',
+                            None,
+                        )
+                    ],
+                    None,
+                    None,
+                    [],
+                ),
+            ),
+            """## Parameters
+
+- Parameter: `a`
+
+  Type: --
+
+  Kind: normal
+
+  Default value: `1`
+
+  Description: --""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            'int',
+                        )
+                    ],
+                    None,
+                    None,
+                    [],
+                ),
+            ),
+            """## Parameters
+
+- Parameter: `a`
+
+  Type: `int`
+
+  Kind: normal
+
+  Default value: --
+
+  Description: --""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            '1',
+                            'int',
+                        )
+                    ],
+                    None,
+                    None,
+                    [],
+                ),
+            ),
+            """## Parameters
+
+- Parameter: `a`
+
+  Type: `int`
+
+  Kind: normal
+
+  Default value: `1`
+
+  Description: --""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'b',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            None,
+                        ),
+                    ],
+                    None,
+                    None,
+                    [],
+                ),
+            ),
+            """## Parameters
+
+- Parameter: `a`
+
+  Type: --
+
+  Kind: normal
+
+  Default value: --
+
+  Description: --
+
+- Parameter: `b`
+
+  Type: --
+
+  Kind: positional-only
+
+  Default value: --
+
+  Description: --""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'b',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            None,
+                        ),
+                    ],
+                    None,
+                    PythonDocstring(':param b: a parameter\n:type b: int'),
+                    [],
+                ),
+            ),
+            """## Parameters
+
+- Parameter: `a`
+
+  Type: --
+
+  Kind: normal
+
+  Default value: --
+
+  Description: --
+
+- Parameter: `b`
+
+  Type: `int`
+
+  Kind: positional-only
+
+  Default value: --
+
+  Description: a parameter""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'b',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            None,
+                        ),
+                    ],
+                    None,
+                    PythonDocstring(
+                        ':param b:\n:type b: int',
+                    ),
+                    [],
+                ),
+            ),
+            """## Parameters
+
+- Parameter: `a`
+
+  Type: --
+
+  Kind: normal
+
+  Default value: --
+
+  Description: --
+
+- Parameter: `b`
+
+  Type: `int`
+
+  Kind: positional-only
+
+  Default value: --
+
+  Description: --""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'b',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            None,
+                        ),
+                    ],
+                    None,
+                    PythonDocstring(':param b:   \n:type b: int'),
+                    [],
+                ),
+            ),
+            """## Parameters
+
+- Parameter: `a`
+
+  Type: --
+
+  Kind: normal
+
+  Default value: --
+
+  Description: --
+
+- Parameter: `b`
+
+  Type: `int`
+
+  Kind: positional-only
+
+  Default value: --
+
+  Description: --""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'b',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            None,
+                        ),
+                    ],
+                    None,
+                    PythonDocstring(':param b: a parameter\n:type b: int'),
+                    [],
+                ),
+                allow_tables=True,
+            ),
+            """## Parameters
 
 | Parameter | Type | Kind | Default value | Description |
 | --- | --- | --- | --- | --- |
 | `a` | -- | normal | -- | -- |
-| `b` | `int` | positional-only | -- | a parameter |''',
-    ),
-])
+| `b` | `int` | positional-only | -- | a parameter |""",
+        ),
+    ],
+)
 def test_PythonDefinitionDocumentationGenerator__generate_params_section(
     definition_documentation_generator,
     expected,
@@ -1115,59 +1125,62 @@ def test_PythonDefinitionDocumentationGenerator__generate_params_section(
         == expected
     )
 
-@pytest.mark.parametrize('definition_documentation_generator,expected', [
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                [],
+
+@pytest.mark.parametrize(
+    'definition_documentation_generator,expected',
+    [
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    [],
+                ),
             ),
+            '',
         ),
-        '',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                [],
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    [],
+                ),
+                skip_empty_sections=False,
             ),
-            skip_empty_sections = False,
+            '## Exceptions\n\nThis function raises no exceptions.',
         ),
-        '## Exceptions\n\nThis function raises no exceptions.',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring(':raises E: a'), [],
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring(':raises E: a'),
+                    [],
+                ),
             ),
-        ),
-        '''## Exceptions
+            """## Exceptions
 
 - Exception: `E`
 
-  Description: a''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring(':raises E:\n:raises E2:'),
-                [],
-            ),
+  Description: a""",
         ),
-        '''## Exceptions
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring(':raises E:\n:raises E2:'),
+                    [],
+                ),
+            ),
+            """## Exceptions
 
 - Exception: `E`
 
@@ -1175,20 +1188,19 @@ def test_PythonDefinitionDocumentationGenerator__generate_params_section(
 
 - Exception: `E2`
 
-  Description: --''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring(':raises E:\n:raises E2: a'),
-                [],
-            ),
+  Description: --""",
         ),
-        '''## Exceptions
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring(':raises E:\n:raises E2: a'),
+                    [],
+                ),
+            ),
+            """## Exceptions
 
 - Exception: `E`
 
@@ -1196,9 +1208,10 @@ def test_PythonDefinitionDocumentationGenerator__generate_params_section(
 
 - Exception: `E2`
 
-  Description: a''',
-    ),
-])
+  Description: a""",
+        ),
+    ],
+)
 def test_PythonDefinitionDocumentationGenerator__generate_exceptions_section(
     definition_documentation_generator,
     expected,
@@ -1208,175 +1221,175 @@ def test_PythonDefinitionDocumentationGenerator__generate_exceptions_section(
         == expected
     )
 
-@pytest.mark.parametrize('definition_documentation_generator,expected', [
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                [],
-            ),
-        ),
-        '',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring(''),
-                [],
-            ),
-        ),
-        '',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('Examples\n--------'),
-                [],
-            ),
-        ),
-        '',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('Examples\n--------\n'),
-                [],
-            ),
-        ),
-        '',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('Examples\n--------\n\n'),
-                [],
-            ),
-        ),
-        '',
-    ),
 
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                [],
+@pytest.mark.parametrize(
+    'definition_documentation_generator,expected',
+    [
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    [],
+                ),
             ),
-            skip_empty_sections = False
+            '',
         ),
-        '## Examples\n\nThere are no examples.',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring(''),
-                [],
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring(''),
+                    [],
+                ),
             ),
-            skip_empty_sections = False,
+            '',
         ),
-        '## Examples\n\nThere are no examples.',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('Examples\n--------'),
-                [],
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('Examples\n--------'),
+                    [],
+                ),
             ),
-            skip_empty_sections = False,
+            '',
         ),
-        '## Examples\n\nThere are no examples.',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('Examples\n--------\n'),
-                [],
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('Examples\n--------\n'),
+                    [],
+                ),
             ),
-            skip_empty_sections = False,
+            '',
         ),
-        '## Examples\n\nThere are no examples.',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('Examples\n--------\n\n'),
-                [],
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('Examples\n--------\n\n'),
+                    [],
+                ),
             ),
-            skip_empty_sections = False,
+            '',
         ),
-        '## Examples\n\nThere are no examples.',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring(
-                    '''Examples
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    [],
+                ),
+                skip_empty_sections=False,
+            ),
+            '## Examples\n\nThere are no examples.',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring(''),
+                    [],
+                ),
+                skip_empty_sections=False,
+            ),
+            '## Examples\n\nThere are no examples.',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('Examples\n--------'),
+                    [],
+                ),
+                skip_empty_sections=False,
+            ),
+            '## Examples\n\nThere are no examples.',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('Examples\n--------\n'),
+                    [],
+                ),
+                skip_empty_sections=False,
+            ),
+            '## Examples\n\nThere are no examples.',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('Examples\n--------\n\n'),
+                    [],
+                ),
+                skip_empty_sections=False,
+            ),
+            '## Examples\n\nThere are no examples.',
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring(
+                        """Examples
 --------
 >>> a()
-None''',
+None""",
+                    ),
+                    [],
                 ),
-                [],
             ),
-        ),
-        '''## Examples
+            """## Examples
 
 ```python
 >>> a()
-```''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring(
-                    '''Examples
+```""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring(
+                        """Examples
 --------
 >>> a()
 None
 
 >>> a()
-None''',
+None""",
+                    ),
+                    [],
                 ),
-                [],
             ),
-        ),
-        '''## Examples
+            """## Examples
 
 ```python
 >>> a()
@@ -1386,28 +1399,27 @@ None''',
 
 ```python
 >>> a()
-```''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring(
-                    '''Examples
+```""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring(
+                        """Examples
 --------
 >>> a()
 None
 
 >>> b()
-1''',
+1""",
+                    ),
+                    [],
                 ),
-                [],
             ),
-        ),
-        '''## Examples
+            """## Examples
 
 ```python
 >>> a()
@@ -1417,9 +1429,10 @@ None
 
 ```python
 >>> b()
-```''',
-    ),
-])
+```""",
+        ),
+    ],
+)
 def test_PythonDefinitionDocumentationGenerator__generate_examples_section(
     definition_documentation_generator,
     expected,
@@ -1429,105 +1442,104 @@ def test_PythonDefinitionDocumentationGenerator__generate_examples_section(
         == expected
     )
 
-@pytest.mark.parametrize('definition_documentation_generator,expected', [
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                'int',
-                None,
-                [],
+
+@pytest.mark.parametrize(
+    'definition_documentation_generator,expected',
+    [
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    'int',
+                    None,
+                    [],
+                ),
             ),
-        ),
-        '''## Returns
+            """## Returns
 
-Return type: `int`''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                'int',
-                PythonDocstring(':return: value'),
-                [],
-            ),
-        ),
-        '''## Returns
-
-value
-
-Return type: `int`''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                'int',
-                PythonDocstring(':return: value\n:rtype: str'),
-                [],
-            ),
-        ),
-        '''## Returns
-
-value
-
-Return type: `int`''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring(':return: value\n:rtype: str'),
-                [],
-            ),
-        ),
-        '''## Returns
-
-value
-
-Return type: `str`''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring(':return: value'),
-                [],
-            ),
-        ),
-        '''## Returns
-
-value''',
-    ),
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                PythonDocstring('a'),
-                [],
-            ),
-            skip_empty_sections = False,
+Return type: `int`""",
         ),
         (
-            '## Returns\n\nThis function does not provi'
-            'de any information about its return value.'
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    'int',
+                    PythonDocstring(':return: value'),
+                    [],
+                ),
+            ),
+            """## Returns
+
+value
+
+Return type: `int`""",
         ),
-    ),
-])
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    'int',
+                    PythonDocstring(':return: value\n:rtype: str'),
+                    [],
+                ),
+            ),
+            """## Returns
+
+value
+
+Return type: `int`""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring(':return: value\n:rtype: str'),
+                    [],
+                ),
+            ),
+            """## Returns
+
+value
+
+Return type: `str`""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring(':return: value'),
+                    [],
+                ),
+            ),
+            """## Returns
+
+value""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    PythonDocstring('a'),
+                    [],
+                ),
+                skip_empty_sections=False,
+            ),
+            (
+                '## Returns\n\nThis function does not provi'
+                'de any information about its return value.'
+            ),
+        ),
+    ],
+)
 def test_PythonDefinitionDocumentationGenerator__generate_returns_section(
     definition_documentation_generator,
     expected,
@@ -1537,18 +1549,21 @@ def test_PythonDefinitionDocumentationGenerator__generate_returns_section(
         == expected
     )
 
-@pytest.mark.parametrize('definition_documentation_generator,expected', [
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                ['a', 'b'],
+
+@pytest.mark.parametrize(
+    'definition_documentation_generator,expected',
+    [
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    ['a', 'b'],
+                ),
             ),
-        ),
-        '''## Decorators
+            """## Decorators
 
 ```python
 a
@@ -1556,52 +1571,53 @@ a
 
 ```python
 b
-```''',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                ['a'],
-            ),
+```""",
         ),
-        '''## Decorators
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    ['a'],
+                ),
+            ),
+            """## Decorators
 
 ```python
 a
-```''',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                [],
-            ),
+```""",
         ),
-        '',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [],
-                None,
-                None,
-                [],
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    [],
+                ),
             ),
-            skip_empty_sections = False,
+            '',
         ),
-        '''## Decorators
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [],
+                    None,
+                    None,
+                    [],
+                ),
+                skip_empty_sections=False,
+            ),
+            """## Decorators
 
-This function or class does not have any decorators.''',
-    ),
-])
+This function or class does not have any decorators.""",
+        ),
+    ],
+)
 def test_PythonDefinitionDocumentationGenerator__generate_decorators_section(
     definition_documentation_generator,
     expected,
@@ -1611,97 +1627,101 @@ def test_PythonDefinitionDocumentationGenerator__generate_decorators_section(
         == expected
     )
 
-@pytest.mark.parametrize('definition_documentation_generator,expected', [
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonClassDefinition(
-                'A',
-                [],
-                None,
-                [],
-                [],
-            ),
-        ),
-        '',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonClassDefinition(
-                'A',
-                [],
-                None,
-                [],
-                [],
-            ),
-            skip_empty_sections = False,
-        ),
-        '''## Base classes
 
-This class does not have any base classes.''',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonClassDefinition(
-                'A',
-                ['a'],
-                None,
-                [],
-                [],
+@pytest.mark.parametrize(
+    'definition_documentation_generator,expected',
+    [
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonClassDefinition(
+                    'A',
+                    [],
+                    None,
+                    [],
+                    [],
+                ),
             ),
-            skip_empty_sections = False,
+            '',
         ),
-        '''## Base classes
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonClassDefinition(
+                    'A',
+                    [],
+                    None,
+                    [],
+                    [],
+                ),
+                skip_empty_sections=False,
+            ),
+            """## Base classes
 
-- `a`''',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonClassDefinition(
-                'A',
-                ['b'],
-                None,
-                [],
-                [],
-            ),
-            skip_empty_sections = False,
+This class does not have any base classes.""",
         ),
-        '''## Base classes
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonClassDefinition(
+                    'A',
+                    ['a'],
+                    None,
+                    [],
+                    [],
+                ),
+                skip_empty_sections=False,
+            ),
+            """## Base classes
 
-- `b`''',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonClassDefinition(
-                'A',
-                ['a', 'b'],
-                None,
-                [],
-                [],
-            ),
-            skip_empty_sections = False,
+- `a`""",
         ),
-        '''## Base classes
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonClassDefinition(
+                    'A',
+                    ['b'],
+                    None,
+                    [],
+                    [],
+                ),
+                skip_empty_sections=False,
+            ),
+            """## Base classes
+
+- `b`""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonClassDefinition(
+                    'A',
+                    ['a', 'b'],
+                    None,
+                    [],
+                    [],
+                ),
+                skip_empty_sections=False,
+            ),
+            """## Base classes
 
 - `a`
-- `b`''',
-    ),
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonClassDefinition(
-                'A',
-                ['b', 'a'],
-                None,
-                [],
-                [],
-            ),
-            skip_empty_sections = False,
+- `b`""",
         ),
-        '''## Base classes
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonClassDefinition(
+                    'A',
+                    ['b', 'a'],
+                    None,
+                    [],
+                    [],
+                ),
+                skip_empty_sections=False,
+            ),
+            """## Base classes
 
 - `b`
-- `a`''',
-    ),
-])
+- `a`""",
+        ),
+    ],
+)
 def test_PythonDefinitionDocumentationGenerator__generate_bases_section(
     definition_documentation_generator,
     expected,
@@ -1711,40 +1731,43 @@ def test_PythonDefinitionDocumentationGenerator__generate_bases_section(
         == expected
     )
 
-@pytest.mark.parametrize('definition_documentation_generator,expected', [
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'hello',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        'int',
-                    ),
-                    PythonFunctionArgument(
-                        'world',
-                        PythonArgumentKind.NORMAL,
-                        '1',
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'something',
-                        PythonArgumentKind.KEYWORD_ONLY,
-                        '\'something\'',
-                        'str',
-                    ),
-                    PythonFunctionArgument(
-                        'value',
-                        PythonArgumentKind.KWARGS,
-                        None,
-                        None,
-                    ),
-                ],
-                'bool',
-                PythonDocstring(
-        '''A function.
+
+@pytest.mark.parametrize(
+    'definition_documentation_generator,expected',
+    [
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'hello',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            'int',
+                        ),
+                        PythonFunctionArgument(
+                            'world',
+                            PythonArgumentKind.NORMAL,
+                            '1',
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'something',
+                            PythonArgumentKind.KEYWORD_ONLY,
+                            "'something'",
+                            'str',
+                        ),
+                        PythonFunctionArgument(
+                            'value',
+                            PythonArgumentKind.KWARGS,
+                            None,
+                            None,
+                        ),
+                    ],
+                    'bool',
+                    PythonDocstring(
+                        """A function.
 
 Very long ...
 
@@ -1757,13 +1780,13 @@ Very long ...
 :raises ValueError: If the value is invalid.
 
 :return: The return value.
-:rtype: list''',
+:rtype: list""",
+                    ),
+                    ['decorate(1, 2, 3)'],
                 ),
-                ['decorate(1, 2, 3)'],
+                allow_html=False,
             ),
-            allow_html = False,
-        ),
-        '''# Function `a`
+            """# Function `a`
 
 A function.
 
@@ -1852,43 +1875,41 @@ Very long ...
 :raises ValueError: If the value is invalid.
 
 :return: The return value.
-:rtype: list''',
-    ),
-
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'hello',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        'int',
-                    ),
-                    PythonFunctionArgument(
-                        'world',
-                        PythonArgumentKind.NORMAL,
-                        '1',
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'something',
-                        PythonArgumentKind.KEYWORD_ONLY,
-                        '\'something\'',
-                        'str',
-                    ),
-                    PythonFunctionArgument(
-                        'value',
-                        PythonArgumentKind.KWARGS,
-                        None,
-                        None,
-                    ),
-                ],
-                'bool',
-                PythonDocstring(
-                    '''A function.
+:rtype: list""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'hello',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            'int',
+                        ),
+                        PythonFunctionArgument(
+                            'world',
+                            PythonArgumentKind.NORMAL,
+                            '1',
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'something',
+                            PythonArgumentKind.KEYWORD_ONLY,
+                            "'something'",
+                            'str',
+                        ),
+                        PythonFunctionArgument(
+                            'value',
+                            PythonArgumentKind.KWARGS,
+                            None,
+                            None,
+                        ),
+                    ],
+                    'bool',
+                    PythonDocstring(
+                        """A function.
 
 Very long ...
 
@@ -1901,13 +1922,13 @@ Very long ...
 :raises ValueError: If the value is invalid.
 
 :return: The return value.
-:rtype: list''',
+:rtype: list""",
+                    ),
+                    ['decorate(1, 2, 3)'],
                 ),
-                ['decorate(1, 2, 3)'],
             ),
-        ),
-        (
-            '''# Function `a`
+            (
+                """# Function `a`
 
 A function.
 
@@ -1981,8 +2002,8 @@ decorate(1, 2, 3)
 
 
 
-<details><summary><h2 style="display:inline">Docstring</h2></summary>A '''
-            '''function.
+<details><summary><h2 style="display:inline">Docstring</h2></summary>A """
+                """function.
 
 Very long ...
 
@@ -1995,64 +2016,62 @@ Very long ...
 :raises ValueError: If the value is invalid.
 
 :return: The return value.
-:rtype: list</details>'''
-        ),
-    ),
-
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'hello',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        'int',
-                    ),
-                    PythonFunctionArgument(
-                        'world',
-                        PythonArgumentKind.NORMAL,
-                        '1',
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'something',
-                        PythonArgumentKind.KEYWORD_ONLY,
-                        '\'something\'',
-                        'str',
-                    ),
-                    PythonFunctionArgument(
-                        'value',
-                        PythonArgumentKind.KWARGS,
-                        None,
-                        None,
-                    ),
-                ],
-                'bool',
-                PythonDocstring(
-                    '''A function.
-
-Very long ...
-
-:param hello: A parameter.
-:type hello: str
-:param something: Something.
-:param value: The value.
-:type value: object
-
-:raises ValueError: If the value is invalid.
-
-:return: The return value.
-:rtype: list''',
-                ),
-                ['decorate(1, 2, 3)'],
+:rtype: list</details>"""
             ),
-            allow_html = False,
-            allow_tables = True,
         ),
-        '''# Function `a`
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'hello',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            'int',
+                        ),
+                        PythonFunctionArgument(
+                            'world',
+                            PythonArgumentKind.NORMAL,
+                            '1',
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'something',
+                            PythonArgumentKind.KEYWORD_ONLY,
+                            "'something'",
+                            'str',
+                        ),
+                        PythonFunctionArgument(
+                            'value',
+                            PythonArgumentKind.KWARGS,
+                            None,
+                            None,
+                        ),
+                    ],
+                    'bool',
+                    PythonDocstring(
+                        """A function.
+
+Very long ...
+
+:param hello: A parameter.
+:type hello: str
+:param something: Something.
+:param value: The value.
+:type value: object
+
+:raises ValueError: If the value is invalid.
+
+:return: The return value.
+:rtype: list""",
+                    ),
+                    ['decorate(1, 2, 3)'],
+                ),
+                allow_html=False,
+                allow_tables=True,
+            ),
+            """# Function `a`
 
 A function.
 
@@ -2108,43 +2127,41 @@ Very long ...
 :raises ValueError: If the value is invalid.
 
 :return: The return value.
-:rtype: list''',
-    ),
-
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'hello',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        'int',
-                    ),
-                    PythonFunctionArgument(
-                        'world',
-                        PythonArgumentKind.NORMAL,
-                        '1',
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'something',
-                        PythonArgumentKind.KEYWORD_ONLY,
-                        '\'something\'',
-                        'str',
-                    ),
-                    PythonFunctionArgument(
-                        'value',
-                        PythonArgumentKind.KWARGS,
-                        None,
-                        None,
-                    ),
-                ],
-                'bool',
-                PythonDocstring(
-                    '''A function.
+:rtype: list""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'hello',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            'int',
+                        ),
+                        PythonFunctionArgument(
+                            'world',
+                            PythonArgumentKind.NORMAL,
+                            '1',
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'something',
+                            PythonArgumentKind.KEYWORD_ONLY,
+                            "'something'",
+                            'str',
+                        ),
+                        PythonFunctionArgument(
+                            'value',
+                            PythonArgumentKind.KWARGS,
+                            None,
+                            None,
+                        ),
+                    ],
+                    'bool',
+                    PythonDocstring(
+                        """A function.
 
 Very long ...
 
@@ -2157,14 +2174,14 @@ Very long ...
 :raises ValueError: If the value is invalid.
 
 :return: The return value.
-:rtype: list''',
+:rtype: list""",
+                    ),
+                    ['decorate(1, 2, 3)'],
                 ),
-                ['decorate(1, 2, 3)'],
+                allow_tables=True,
             ),
-            allow_tables = True,
-        ),
-        (
-            '''# Function `a`
+            (
+                """# Function `a`
 
 A function.
 
@@ -2205,8 +2222,8 @@ decorate(1, 2, 3)
 
 
 
-<details><summary><h2 style="display:inline">Docstring</h2></summary>A '''
-            '''function.
+<details><summary><h2 style="display:inline">Docstring</h2></summary>A """
+                """function.
 
 Very long ...
 
@@ -2219,64 +2236,62 @@ Very long ...
 :raises ValueError: If the value is invalid.
 
 :return: The return value.
-:rtype: list</details>'''
-        ),
-    ),
-
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'hello',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        'int',
-                    ),
-                    PythonFunctionArgument(
-                        'world',
-                        PythonArgumentKind.NORMAL,
-                        '1',
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'something',
-                        PythonArgumentKind.KEYWORD_ONLY,
-                        '\'something\'',
-                        'str',
-                    ),
-                    PythonFunctionArgument(
-                        'value',
-                        PythonArgumentKind.KWARGS,
-                        None,
-                        None,
-                    ),
-                ],
-                'bool',
-                PythonDocstring(
-                    '''A function.
-
-Very long ...
-
-:param hello: A parameter.
-:type hello: str
-:param something: Something.
-:param value: The value.
-:type value: object
-
-:raises ValueError: If the value is invalid.
-
-:return: The return value.
-:rtype: list''',
-                ),
-                ['decorate(1, 2, 3)'],
+:rtype: list</details>"""
             ),
-            allow_html = False,
-            skip_empty_sections = False,
         ),
-        '''# Function `a`
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'hello',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            'int',
+                        ),
+                        PythonFunctionArgument(
+                            'world',
+                            PythonArgumentKind.NORMAL,
+                            '1',
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'something',
+                            PythonArgumentKind.KEYWORD_ONLY,
+                            "'something'",
+                            'str',
+                        ),
+                        PythonFunctionArgument(
+                            'value',
+                            PythonArgumentKind.KWARGS,
+                            None,
+                            None,
+                        ),
+                    ],
+                    'bool',
+                    PythonDocstring(
+                        """A function.
+
+Very long ...
+
+:param hello: A parameter.
+:type hello: str
+:param something: Something.
+:param value: The value.
+:type value: object
+
+:raises ValueError: If the value is invalid.
+
+:return: The return value.
+:rtype: list""",
+                    ),
+                    ['decorate(1, 2, 3)'],
+                ),
+                allow_html=False,
+                skip_empty_sections=False,
+            ),
+            """# Function `a`
 
 A function.
 
@@ -2367,43 +2382,41 @@ Very long ...
 :raises ValueError: If the value is invalid.
 
 :return: The return value.
-:rtype: list''',
-    ),
-
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'hello',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        'int',
-                    ),
-                    PythonFunctionArgument(
-                        'world',
-                        PythonArgumentKind.NORMAL,
-                        '1',
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'something',
-                        PythonArgumentKind.KEYWORD_ONLY,
-                        '\'something\'',
-                        'str',
-                    ),
-                    PythonFunctionArgument(
-                        'value',
-                        PythonArgumentKind.KWARGS,
-                        None,
-                        None,
-                    ),
-                ],
-                'bool',
-                PythonDocstring(
-                    '''A function.
+:rtype: list""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'hello',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            'int',
+                        ),
+                        PythonFunctionArgument(
+                            'world',
+                            PythonArgumentKind.NORMAL,
+                            '1',
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'something',
+                            PythonArgumentKind.KEYWORD_ONLY,
+                            "'something'",
+                            'str',
+                        ),
+                        PythonFunctionArgument(
+                            'value',
+                            PythonArgumentKind.KWARGS,
+                            None,
+                            None,
+                        ),
+                    ],
+                    'bool',
+                    PythonDocstring(
+                        """A function.
 
 Very long ...
 
@@ -2416,14 +2429,14 @@ Very long ...
 :raises ValueError: If the value is invalid.
 
 :return: The return value.
-:rtype: list''',
+:rtype: list""",
+                    ),
+                    ['decorate(1, 2, 3)'],
                 ),
-                ['decorate(1, 2, 3)'],
+                skip_empty_sections=False,
             ),
-            skip_empty_sections = False,
-        ),
-        (
-            '''# Function `a`
+            (
+                """# Function `a`
 
 A function.
 
@@ -2499,8 +2512,8 @@ decorate(1, 2, 3)
 
 There are no examples.
 
-<details><summary><h2 style="display:inline">Docstring</h2></summary>A '''
-            '''function.
+<details><summary><h2 style="display:inline">Docstring</h2></summary>A """
+                """function.
 
 Very long ...
 
@@ -2513,65 +2526,63 @@ Very long ...
 :raises ValueError: If the value is invalid.
 
 :return: The return value.
-:rtype: list</details>'''
-        ),
-    ),
-
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'hello',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        'int',
-                    ),
-                    PythonFunctionArgument(
-                        'world',
-                        PythonArgumentKind.NORMAL,
-                        '1',
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'something',
-                        PythonArgumentKind.KEYWORD_ONLY,
-                        '\'something\'',
-                        'str',
-                    ),
-                    PythonFunctionArgument(
-                        'value',
-                        PythonArgumentKind.KWARGS,
-                        None,
-                        None,
-                    ),
-                ],
-                'bool',
-                PythonDocstring(
-                    '''A function.
-
-Very long ...
-
-:param hello: A parameter.
-:type hello: str
-:param something: Something.
-:param value: The value.
-:type value: object
-
-:raises ValueError: If the value is invalid.
-
-:return: The return value.
-:rtype: list''',
-                ),
-                ['decorate(1, 2, 3)'],
+:rtype: list</details>"""
             ),
-            allow_html = False,
-            allow_tables = True,
-            skip_empty_sections = False,
         ),
-        '''# Function `a`
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'hello',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            'int',
+                        ),
+                        PythonFunctionArgument(
+                            'world',
+                            PythonArgumentKind.NORMAL,
+                            '1',
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'something',
+                            PythonArgumentKind.KEYWORD_ONLY,
+                            "'something'",
+                            'str',
+                        ),
+                        PythonFunctionArgument(
+                            'value',
+                            PythonArgumentKind.KWARGS,
+                            None,
+                            None,
+                        ),
+                    ],
+                    'bool',
+                    PythonDocstring(
+                        """A function.
+
+Very long ...
+
+:param hello: A parameter.
+:type hello: str
+:param something: Something.
+:param value: The value.
+:type value: object
+
+:raises ValueError: If the value is invalid.
+
+:return: The return value.
+:rtype: list""",
+                    ),
+                    ['decorate(1, 2, 3)'],
+                ),
+                allow_html=False,
+                allow_tables=True,
+                skip_empty_sections=False,
+            ),
+            """# Function `a`
 
 A function.
 
@@ -2629,43 +2640,41 @@ Very long ...
 :raises ValueError: If the value is invalid.
 
 :return: The return value.
-:rtype: list''',
-    ),
-
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'hello',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        'int',
-                    ),
-                    PythonFunctionArgument(
-                        'world',
-                        PythonArgumentKind.NORMAL,
-                        '1',
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'something',
-                        PythonArgumentKind.KEYWORD_ONLY,
-                        '\'something\'',
-                        'str',
-                    ),
-                    PythonFunctionArgument(
-                        'value',
-                        PythonArgumentKind.KWARGS,
-                        None,
-                        None,
-                    ),
-                ],
-                'bool',
-                PythonDocstring(
-                    '''A function.
+:rtype: list""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'hello',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            'int',
+                        ),
+                        PythonFunctionArgument(
+                            'world',
+                            PythonArgumentKind.NORMAL,
+                            '1',
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'something',
+                            PythonArgumentKind.KEYWORD_ONLY,
+                            "'something'",
+                            'str',
+                        ),
+                        PythonFunctionArgument(
+                            'value',
+                            PythonArgumentKind.KWARGS,
+                            None,
+                            None,
+                        ),
+                    ],
+                    'bool',
+                    PythonDocstring(
+                        """A function.
 
 Very long ...
 
@@ -2678,15 +2687,15 @@ Very long ...
 :raises ValueError: If the value is invalid.
 
 :return: The return value.
-:rtype: list''',
+:rtype: list""",
+                    ),
+                    ['decorate(1, 2, 3)'],
                 ),
-                ['decorate(1, 2, 3)'],
+                allow_tables=True,
+                skip_empty_sections=False,
             ),
-            allow_tables = True,
-            skip_empty_sections = False,
-        ),
-        (
-            '''# Function `a`
+            (
+                """# Function `a`
 
 A function.
 
@@ -2729,8 +2738,8 @@ decorate(1, 2, 3)
 
 There are no examples.
 
-<details><summary><h2 style="display:inline">Docstring</h2></summary>A '''
-            '''function.
+<details><summary><h2 style="display:inline">Docstring</h2></summary>A """
+                """function.
 
 Very long ...
 
@@ -2743,44 +2752,42 @@ Very long ...
 :raises ValueError: If the value is invalid.
 
 :return: The return value.
-:rtype: list</details>'''
+:rtype: list</details>"""
+            ),
         ),
-    ),
-
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonFunctionDefinition(
-                'a',
-                [
-                    PythonFunctionArgument(
-                        'hello',
-                        PythonArgumentKind.POSITIONAL_ONLY,
-                        None,
-                        'int',
-                    ),
-                    PythonFunctionArgument(
-                        'world',
-                        PythonArgumentKind.NORMAL,
-                        '1',
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'something',
-                        PythonArgumentKind.KEYWORD_ONLY,
-                        '\'something\'',
-                        'str',
-                    ),
-                    PythonFunctionArgument(
-                        'value',
-                        PythonArgumentKind.KWARGS,
-                        None,
-                        None,
-                    ),
-                ],
-                'bool',
-                PythonDocstring(
-                    '''A function.
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonFunctionDefinition(
+                    'a',
+                    [
+                        PythonFunctionArgument(
+                            'hello',
+                            PythonArgumentKind.POSITIONAL_ONLY,
+                            None,
+                            'int',
+                        ),
+                        PythonFunctionArgument(
+                            'world',
+                            PythonArgumentKind.NORMAL,
+                            '1',
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'something',
+                            PythonArgumentKind.KEYWORD_ONLY,
+                            "'something'",
+                            'str',
+                        ),
+                        PythonFunctionArgument(
+                            'value',
+                            PythonArgumentKind.KWARGS,
+                            None,
+                            None,
+                        ),
+                    ],
+                    'bool',
+                    PythonDocstring(
+                        """A function.
 
 Very long ...
 
@@ -2793,126 +2800,124 @@ Very long ...
 :raises ValueError: If the value is invalid.
 
 :return: The return value.
-:rtype: list''',
+:rtype: list""",
+                    ),
+                    ['decorate(1, 2, 3)'],
                 ),
-                ['decorate(1, 2, 3)'],
+                PythonDefinitionDocumentationIncludeSections(
+                    signature=False,
+                    returns=False,
+                    params=False,
+                    exceptions=False,
+                    examples=False,
+                    docstring=False,
+                    bases=False,
+                    decorators=False,
+                ),
+                allow_tables=True,
+                skip_empty_sections=False,
             ),
-            PythonDefinitionDocumentationIncludeSections(
-                signature = False,
-                returns = False,
-                params = False,
-                exceptions = False,
-                examples = False,
-                docstring = False,
-                bases = False,
-                decorators = False,
-            ),
-            allow_tables = True,
-            skip_empty_sections = False,
-        ),
-        '''# Function `a`
+            """# Function `a`
 
 A function.
 
-Very long ...''',
-    ),
-
-
-    (
-        PythonDefinitionDocumentationGenerator(
-            PythonClassDefinition(
-                'A',
-                ['Base1', 'Base2'],
-                PythonDocstring(
-                    '''A class.
+Very long ...""",
+        ),
+        (
+            PythonDefinitionDocumentationGenerator(
+                PythonClassDefinition(
+                    'A',
+                    ['Base1', 'Base2'],
+                    PythonDocstring(
+                        """A class.
 
 Examples
 --------
 >>> A()
 
->>> A()''',
+>>> A()""",
+                    ),
+                    ['dec', 'ora', 'tor'],
+                    [
+                        PythonFunctionDefinition(
+                            '__init__',
+                            [
+                                PythonFunctionArgument(
+                                    'self',
+                                    PythonArgumentKind.NORMAL,
+                                    None,
+                                    None,
+                                ),
+                            ],
+                            None,
+                            None,
+                            [],
+                        ),
+                        PythonFunctionDefinition(
+                            'method',
+                            [
+                                PythonFunctionArgument(
+                                    'self',
+                                    PythonArgumentKind.NORMAL,
+                                    None,
+                                    None,
+                                ),
+                                PythonFunctionArgument(
+                                    'a',
+                                    PythonArgumentKind.NORMAL,
+                                    '1',
+                                    'int',
+                                ),
+                            ],
+                            'str',
+                            None,
+                            ['decorator'],
+                        ),
+                        PythonAsyncFunctionDefinition(
+                            'method2',
+                            [
+                                PythonFunctionArgument(
+                                    'self',
+                                    PythonArgumentKind.NORMAL,
+                                    None,
+                                    None,
+                                ),
+                            ],
+                            None,
+                            None,
+                            [],
+                        ),
+                        PythonClassDefinition(
+                            'B',
+                            ['Base'],
+                            None,
+                            [],
+                            [
+                                PythonFunctionDefinition(
+                                    '__init__',
+                                    [
+                                        PythonFunctionArgument(
+                                            'self',
+                                            PythonArgumentKind.NORMAL,
+                                            None,
+                                            None,
+                                        )
+                                    ],
+                                    None,
+                                    None,
+                                    [],
+                                ),
+                            ],
+                        ),
+                    ],
+                ),
+                allow_html=False,
+                allow_tables=True,
+                include_sections=PythonDefinitionDocumentationIncludeSections(
+                    bases=False,
                 ),
-                ['dec', 'ora', 'tor'],
-                [
-                    PythonFunctionDefinition(
-                        '__init__',
-                        [
-                            PythonFunctionArgument(
-                                'self',
-                                PythonArgumentKind.NORMAL,
-                                None,
-                                None,
-                            ),
-                        ],
-                        None,
-                        None,
-                        [],
-                    ),
-                    PythonFunctionDefinition(
-                        'method',
-                        [
-                            PythonFunctionArgument(
-                                'self',
-                                PythonArgumentKind.NORMAL,
-                                None,
-                                None,
-                            ),
-                            PythonFunctionArgument(
-                                'a',
-                                PythonArgumentKind.NORMAL,
-                                '1',
-                                'int',
-                            ),
-                        ],
-                        'str',
-                        None,
-                        ['decorator'],
-                    ),
-                    PythonAsyncFunctionDefinition(
-                        'method2',
-                        [
-                            PythonFunctionArgument(
-                                'self',
-                                PythonArgumentKind.NORMAL,
-                                None,
-                                None,
-                            ),
-                        ],
-                        None,
-                        None,
-                        [],
-                    ),
-                    PythonClassDefinition(
-                        'B',
-                        ['Base'],
-                        None,
-                        [],
-                        [
-                            PythonFunctionDefinition(
-                                '__init__',
-                                [
-                                    PythonFunctionArgument(
-                                        'self',
-                                        PythonArgumentKind.NORMAL,
-                                        None,
-                                        None,
-                                    )
-                                ],
-                                None,
-                                None,
-                                [],
-                            ),
-                        ],
-                    ),
-                ],
             ),
-            allow_html = False,
-            allow_tables = True,
-            include_sections = PythonDefinitionDocumentationIncludeSections(
-                bases = False,
-            ),
-        ),
-        '''# Class `A`
+            """# Class `A`
 
 A class.
 
@@ -3032,14 +3037,14 @@ Examples
 --------
 >>> A()
 
->>> A()''',
-    ),
-])
+>>> A()""",
+        ),
+    ],
+)
 def test_PythonDefinitionDocumentationGenerator_generate_documentation(
     definition_documentation_generator,
     expected,
 ):
     assert (
-        definition_documentation_generator.generate_documentation()
-        == expected
+        definition_documentation_generator.generate_documentation() == expected
     )
diff --git a/tests/unit/core/python/_core/test_PythonDocumentationGenerator.py b/tests/unit/core/python/_core/test_PythonDocumentationGenerator.py
index e94a613..047da87 100644
--- a/tests/unit/core/python/_core/test_PythonDocumentationGenerator.py
+++ b/tests/unit/core/python/_core/test_PythonDocumentationGenerator.py
@@ -20,78 +20,82 @@ from src.jcloud_docsgen.core.python.namespaces import (
 import pytest
 import pathlib
 
-@pytest.mark.parametrize('python_documentation_generator,expected', [
-    (
-        PythonDocumentationGenerator(
-            pathlib.Path(
-                'tests/unit/core/python/_core/test_project_dirs/pdir_1'
-            ),
-            pathlib.Path(
-                'tests/unit/core/python/_core/test_project_dirs/pdir_1/docs'
+
+@pytest.mark.parametrize(
+    'python_documentation_generator,expected',
+    [
+        (
+            PythonDocumentationGenerator(
+                pathlib.Path(
+                    'tests/unit/core/python/_core/test_project_dirs/pdir_1'
+                ),
+                pathlib.Path(
+                    'tests/unit/core/python/_core/test_project_dirs/pdir_1/docs'
+                ),
             ),
+            [],
         ),
-        [],
-    ),
-    (
-        PythonDocumentationGenerator(
-            pathlib.Path(
-                'tests/unit/core/python/_core/test_project_dirs/pdir_2'
-            ),
-            pathlib.Path(
-                'tests/unit/core/python/_core/test_project_dirs/pdir_2/docs'
+        (
+            PythonDocumentationGenerator(
+                pathlib.Path(
+                    'tests/unit/core/python/_core/test_project_dirs/pdir_2'
+                ),
+                pathlib.Path(
+                    'tests/unit/core/python/_core/test_project_dirs/pdir_2/docs'
+                ),
             ),
+            [
+                PythonPackageNamespace(
+                    'pkg',
+                    [PythonModuleNamespace('module')],
+                ),
+            ],
         ),
-        [
-            PythonPackageNamespace(
-                'pkg',
-                [
-                    PythonModuleNamespace('module')
-                ],
-            ),
-        ],
-    ),
-    (
-        PythonDocumentationGenerator(
-            pathlib.Path(
-                'tests/unit/core/python/_core/test_project_dirs/pdir_3'
-            ),
-            pathlib.Path(
-                'tests/unit/core/python/_core/test_project_dirs/pdir_3/docs'
+        (
+            PythonDocumentationGenerator(
+                pathlib.Path(
+                    'tests/unit/core/python/_core/test_project_dirs/pdir_3'
+                ),
+                pathlib.Path(
+                    'tests/unit/core/python/_core/test_project_dirs/pdir_3/docs'
+                ),
             ),
+            [
+                PythonPackageNamespace(
+                    'pkg',
+                    [
+                        PythonModuleNamespace('module'),
+                        PythonPackageNamespace(
+                            'pkg',
+                            [
+                                PythonModuleNamespace('module2'),
+                            ],
+                        ),
+                    ],
+                ),
+            ],
         ),
-        [
-            PythonPackageNamespace(
-                'pkg',
-                [
-                    PythonModuleNamespace('module'),
-                    PythonPackageNamespace(
-                        'pkg',
-                        [
-                            PythonModuleNamespace(
-                                'module2'
-                            ),
-                        ],
-                    ),
-                ],
-            ),
-        ],
-    ),
-])
+    ],
+)
 def test_PythonDocumentationGenerator_collect_modules(
     python_documentation_generator: PythonDocumentationGenerator,
     expected,
 ):
     assert python_documentation_generator.namespace() == expected
 
-@pytest.mark.parametrize('dir', [
-    d.name
-    for d in pathlib.Path(
-        (
-            'tests/unit/core/python/_core/test_PythonDocume'
-            'ntationGenerator/test_generate_documentation/'
-        ),
-    ).iterdir()
-])
+
+@pytest.mark.parametrize(
+    'dir',
+    [
+        d.name
+        for d in pathlib.Path(
+            (
+                'tests/unit/core/python/_core/test_PythonDocume'
+                'ntationGenerator/test_generate_documentation/'
+            ),
+        ).iterdir()
+    ],
+)
 def test_generate_documentation(dir, expectdir):
     with expectdir(
         'test_PythonDocumentationGenerator/test_generate_documentation/' + dir
@@ -104,12 +108,12 @@ def test_generate_documentation(dir, expectdir):
                             'tests/unit/core/python/_core/test_PythonDocume'
                             'ntationGenerator/test_generate_documentation/'
                         ),
-                    ) /
-                    dir /
-                    'project',
+                    )
+                    / dir
+                    / 'project',
                 ),
             ),
             pathlib.Path(str(d)),
-            allow_tables = True,
-            allow_html = False,
-        ).generate_documentation() # simplify the tests
+            allow_tables=True,
+            allow_html=False,
+        ).generate_documentation()  # simplify the tests
diff --git a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/exceptions.py b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/exceptions.py
index 6d29928..bce8c8c 100644
--- a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/exceptions.py
+++ b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/exceptions.py
@@ -1,8 +1,10 @@
 class UserNotFoundError(Exception):
     """User does not exist."""
+
     pass
 
 
 class InvalidEmailError(Exception):
     """Email address is invalid."""
-    pass
\ No newline at end of file
+
+    pass
diff --git a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/models.py b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/models.py
index 1f7cc5f..bf4d0c9 100644
--- a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/models.py
+++ b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/models.py
@@ -7,7 +7,8 @@ class User:
     """
     Represents a user.
     """
+
     id: str
     name: str
     email: str
-    age: Optional[int] = None
\ No newline at end of file
+    age: Optional[int] = None
diff --git a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/service.py b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/service.py
index 755c0d8..c240ac8 100644
--- a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/service.py
+++ b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/service.py
@@ -13,23 +13,16 @@ class UserService:
         self.storage = storage
 
     def create_user(
-        self,
-        user_id: str,
-        name: str,
-        email: str,
-        age: int | None = None
+        self, user_id: str, name: str, email: str, age: int | None = None
     ) -> User:
         """
         Creates and stores a new user.
         """
         if not is_valid_email(email):
-            raise InvalidEmailError(f"Invalid email: {email}")
+            raise InvalidEmailError(f'Invalid email: {email}')
 
         user = User(
-            id=user_id,
-            name=normalize_name(name),
-            email=email,
-            age=age
+            id=user_id, name=normalize_name(name), email=email, age=age
         )
 
         self.storage.add(user)
@@ -51,4 +44,4 @@ class UserService:
         try:
             self.storage.delete(user_id)
         except KeyError:
-            raise UserNotFoundError(user_id)
\ No newline at end of file
+            raise UserNotFoundError(user_id)
diff --git a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/storage.py b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/storage.py
index 29ff61d..659c14f 100644
--- a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/storage.py
+++ b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/storage.py
@@ -25,4 +25,4 @@ class InMemoryUserStorage:
 
     def list_all(self) -> List[User]:
         """Returns all users."""
-        return list(self._users.values())
\ No newline at end of file
+        return list(self._users.values())
diff --git a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/utils.py b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/utils.py
index 5ca8309..c0b334a 100644
--- a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/utils.py
+++ b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/src/user_management/utils.py
@@ -5,7 +5,7 @@ def is_valid_email(email: str) -> bool:
     """
     Checks whether an email address is valid.
     """
-    pattern = r"^[\w\.-]+@[\w\.-]+\.\w+$"
+    pattern = r'^[\w\.-]+@[\w\.-]+\.\w+$'
     return re.match(pattern, email) is not None
 
 
@@ -13,4 +13,4 @@ def normalize_name(name: str) -> str:
     """
     Removes extra spaces and formats the name.
     """
-    return " ".join(name.strip().split()).title()
\ No newline at end of file
+    return ' '.join(name.strip().split()).title()
diff --git a/tests/unit/core/python/_core/test_PythonModuleDocumentationGenerator.py b/tests/unit/core/python/_core/test_PythonModuleDocumentationGenerator.py
index de6ee92..66d9b33 100644
--- a/tests/unit/core/python/_core/test_PythonModuleDocumentationGenerator.py
+++ b/tests/unit/core/python/_core/test_PythonModuleDocumentationGenerator.py
@@ -17,6 +17,7 @@ from src.jcloud_docsgen.exceptions import InvalidNamespaceError
 import pathlib
 import pytest
 
+
 @pytest.mark.parametrize(
     'module_path,src_directory,expected_exception,expected_exception_msg',
     [
@@ -216,22 +217,25 @@ def test_PythonModuleDocumentationGenerator_exceptions(
         PythonModuleDocumentationGenerator(module_path, src_directory)
     assert str(exc_info.value) == expected_exception_msg
 
-@pytest.mark.parametrize('module_documentation_generator,expected', [
-    (
-        PythonModuleDocumentationGenerator(
-            pathlib.Path(
-                (
-                    'tests/unit/core/python/_core/test_pr'
-                    'oject_dirs/pdir_2/src/pkg/module.py'
+
+@pytest.mark.parametrize(
+    'module_documentation_generator,expected',
+    [
+        (
+            PythonModuleDocumentationGenerator(
+                pathlib.Path(
+                    (
+                        'tests/unit/core/python/_core/test_pr'
+                        'oject_dirs/pdir_2/src/pkg/module.py'
+                    ),
                 ),
+                pathlib.Path(
+                    'tests/unit/core/python/_core/test_project_dirs/pdir_2/src/'
+                ),
+                allow_tables=True,
+                allow_html=False,
             ),
-            pathlib.Path(
-                'tests/unit/core/python/_core/test_project_dirs/pdir_2/src/'
-            ),
-            allow_tables = True,
-            allow_html = False,
-        ),
-        '''# Module `pkg.module`
+            """# Module `pkg.module`
 
 A test module.
 
@@ -398,205 +402,21 @@ Barks.
 
 ### Docstring
 
-A dog.'''
-    ),
-
-    (
-        PythonModuleDocumentationGenerator(
-            pathlib.Path(
-                (
-                    'tests/unit/core/python/_core/test_pr'
-                    'oject_dirs/pdir_2/src/pkg/module.py'
-                ),
-            ),
-            None,
-            allow_tables = True,
-            allow_html = False,
-        ),
-        '''# Module `module`
-
-A test module.
-
-## Function `add`
-
-Adds two numbers.
-
-
-### Function signature
-
-```python
-add(a: int | float, b: int | float) -> int | float
-```
-
-### Returns
-
-The sum.
-
-Return type: `int | float`
-
-### Parameters
-
-| Parameter | Type | Kind | Default value | Description |
-| --- | --- | --- | --- | --- |
-| `a` | `int | float` | normal | -- | The first number. |
-| `b` | `int | float` | normal | -- | The second number. |
-
-
-
-
-
-
-
-### Docstring
-
-Adds two numbers.
-
-:param a: The first number.
-:type a: int | float
-:param b: The second number.
-:type b: int | float
-
-:return: The sum.
-:rtype: int | float
-
-## Class `Animal`
-
-A class representing an animal.
-
-
-
-
-### Body
-
-#### Constructor (method `__init__`)
-
-##### Method signature
-
-```python
-__init__(self, name: str) -> None
-```
-
-##### Returns
-
-Return type: `None`
-
-##### Parameters
-
-| Parameter | Type | Kind | Default value | Description |
-| --- | --- | --- | --- | --- |
-| `self` | -- | normal | -- | -- |
-| `name` | `str` | normal | -- | -- |
-
-#### Method `greet`
-
-Returns a greeting.
-
-
-##### Method signature
-
-```python
-greet(self)
-```
-
-##### Returns
-
-The greeting.
-
-Return type: `str`
-
-##### Parameters
-
-| Parameter | Type | Kind | Default value | Description |
-| --- | --- | --- | --- | --- |
-| `self` | -- | normal | -- | -- |
-
-
-
-
-
-
-
-##### Docstring
-
-Returns a greeting.
-
-:return: The greeting.
-:rtype: str
-
-
-
-
-
-### Docstring
-
-A class representing an animal.
-
-:param name: Its name.
-:type name: str
-
-## Class `Dog`
-
-A dog.
-
-### Base classes
-
-- `Animal`
-
-### Body
-
-#### Method `bark`
-
-Barks.
-
-##### Method signature
-
-```python
-bark(self) -> None
-```
-
-##### Returns
-
-Return type: `None`
-
-##### Parameters
-
-| Parameter | Type | Kind | Default value | Description |
-| --- | --- | --- | --- | --- |
-| `self` | -- | normal | -- | -- |
-
-
-
-
-
-
-
-##### Docstring
-
-Barks.
-
-
-
-
-
-### Docstring
-
-A dog.'''
-    ),
-
-    (
-        PythonModuleDocumentationGenerator(
-            pathlib.Path(
-                (
-                    'tests/unit/core/python/_core/test_pr'
-                    'oject_dirs/pdir_2/src/pkg/module.py'
-                ),
-            ),
-            None,
-            allow_tables = True,
-            allow_html = True,
+A dog.""",
         ),
         (
-            '''# Module `module`
+            PythonModuleDocumentationGenerator(
+                pathlib.Path(
+                    (
+                        'tests/unit/core/python/_core/test_pr'
+                        'oject_dirs/pdir_2/src/pkg/module.py'
+                    ),
+                ),
+                None,
+                allow_tables=True,
+                allow_html=False,
+            ),
+            """# Module `module`
 
 A test module.
 
@@ -630,8 +450,190 @@ Return type: `int | float`
 
 
 
-<details><summary><h3 style="display:inline">Docstring</h3></summary>Adds '''
-            '''two numbers.
+### Docstring
+
+Adds two numbers.
+
+:param a: The first number.
+:type a: int | float
+:param b: The second number.
+:type b: int | float
+
+:return: The sum.
+:rtype: int | float
+
+## Class `Animal`
+
+A class representing an animal.
+
+
+
+
+### Body
+
+#### Constructor (method `__init__`)
+
+##### Method signature
+
+```python
+__init__(self, name: str) -> None
+```
+
+##### Returns
+
+Return type: `None`
+
+##### Parameters
+
+| Parameter | Type | Kind | Default value | Description |
+| --- | --- | --- | --- | --- |
+| `self` | -- | normal | -- | -- |
+| `name` | `str` | normal | -- | -- |
+
+#### Method `greet`
+
+Returns a greeting.
+
+
+##### Method signature
+
+```python
+greet(self)
+```
+
+##### Returns
+
+The greeting.
+
+Return type: `str`
+
+##### Parameters
+
+| Parameter | Type | Kind | Default value | Description |
+| --- | --- | --- | --- | --- |
+| `self` | -- | normal | -- | -- |
+
+
+
+
+
+
+
+##### Docstring
+
+Returns a greeting.
+
+:return: The greeting.
+:rtype: str
+
+
+
+
+
+### Docstring
+
+A class representing an animal.
+
+:param name: Its name.
+:type name: str
+
+## Class `Dog`
+
+A dog.
+
+### Base classes
+
+- `Animal`
+
+### Body
+
+#### Method `bark`
+
+Barks.
+
+##### Method signature
+
+```python
+bark(self) -> None
+```
+
+##### Returns
+
+Return type: `None`
+
+##### Parameters
+
+| Parameter | Type | Kind | Default value | Description |
+| --- | --- | --- | --- | --- |
+| `self` | -- | normal | -- | -- |
+
+
+
+
+
+
+
+##### Docstring
+
+Barks.
+
+
+
+
+
+### Docstring
+
+A dog.""",
+        ),
+        (
+            PythonModuleDocumentationGenerator(
+                pathlib.Path(
+                    (
+                        'tests/unit/core/python/_core/test_pr'
+                        'oject_dirs/pdir_2/src/pkg/module.py'
+                    ),
+                ),
+                None,
+                allow_tables=True,
+                allow_html=True,
+            ),
+            (
+                """# Module `module`
+
+A test module.
+
+## Function `add`
+
+Adds two numbers.
+
+
+### Function signature
+
+```python
+add(a: int | float, b: int | float) -> int | float
+```
+
+### Returns
+
+The sum.
+
+Return type: `int | float`
+
+### Parameters
+
+| Parameter | Type | Kind | Default value | Description |
+| --- | --- | --- | --- | --- |
+| `a` | `int | float` | normal | -- | The first number. |
+| `b` | `int | float` | normal | -- | The second number. |
+
+
+
+
+
+
+
+<details><summary><h3 style="display:inline">Docstring</h3></summary>Adds """
+                """two numbers.
 
 :param a: The first number.
 :type a: int | float
@@ -698,8 +700,8 @@ Return type: `str`
 
 
 
-<details><summary><h5 style="display:inline">Docstring</h5></summary>'''
-            '''Returns a greeting.
+<details><summary><h5 style="display:inline">Docstring</h5></summary>"""
+                """Returns a greeting.
 
 :return: The greeting.
 :rtype: str</details>
@@ -708,8 +710,8 @@ Return type: `str`
 
 
 
-<details><summary><h3 style="display:inline">Docstring</h3></summary>A '''
-            '''class representing an animal.
+<details><summary><h3 style="display:inline">Docstring</h3></summary>A """
+                """class representing an animal.
 
 :param name: Its name.
 :type name: str</details>
@@ -750,32 +752,31 @@ Return type: `None`
 
 
 
-<details><summary><h5 style="display:inline">Docstring</h5></summary>Barks.'''
-            '''</details>
+<details><summary><h5 style="display:inline">Docstring</h5></summary>Barks."""
+                """</details>
 
 
 
 
 
-<details><summary><h3 style="display:inline">Docstring</h3></summary>A dog.'''
-            '</details>'
-        ),
-    ),
-
-    (
-        PythonModuleDocumentationGenerator(
-            pathlib.Path(
-                (
-                    'tests/unit/core/python/_core/test_pr'
-                    'oject_dirs/pdir_2/src/pkg/module.py'
-                ),
+<details><summary><h3 style="display:inline">Docstring</h3></summary>A dog."""
+                '</details>'
             ),
-            None,
-            allow_tables = False,
-            allow_html = True,
         ),
         (
-            '''# Module `module`
+            PythonModuleDocumentationGenerator(
+                pathlib.Path(
+                    (
+                        'tests/unit/core/python/_core/test_pr'
+                        'oject_dirs/pdir_2/src/pkg/module.py'
+                    ),
+                ),
+                None,
+                allow_tables=False,
+                allow_html=True,
+            ),
+            (
+                """# Module `module`
 
 A test module.
 
@@ -824,8 +825,8 @@ Return type: `int | float`
 
 
 
-<details><summary><h3 style="display:inline">Docstring</h3></summary>Adds '''
-            '''two numbers.
+<details><summary><h3 style="display:inline">Docstring</h3></summary>Adds """
+                """two numbers.
 
 :param a: The first number.
 :type a: int | float
@@ -913,8 +914,8 @@ Return type: `str`
 
 
 
-<details><summary><h5 style="display:inline">Docstring</h5></summary>'''
-            '''Returns a greeting.
+<details><summary><h5 style="display:inline">Docstring</h5></summary>"""
+                """Returns a greeting.
 
 :return: The greeting.
 :rtype: str</details>
@@ -923,8 +924,8 @@ Return type: `str`
 
 
 
-<details><summary><h3 style="display:inline">Docstring</h3></summary>A '''
-            '''class representing an animal.
+<details><summary><h3 style="display:inline">Docstring</h3></summary>A """
+                """class representing an animal.
 
 :param name: Its name.
 :type name: str</details>
@@ -971,31 +972,30 @@ Return type: `None`
 
 
 
-<details><summary><h5 style="display:inline">Docstring</h5></summary>Barks.'''
-            '''</details>
+<details><summary><h5 style="display:inline">Docstring</h5></summary>Barks."""
+                """</details>
 
 
 
 
 
-<details><summary><h3 style="display:inline">Docstring</h3></summary>A '''
-            'dog.</details>'
-        ),
-    ),
-
-    (
-        PythonModuleDocumentationGenerator(
-            pathlib.Path(
-                (
-                    'tests/unit/core/python/_core/test_pr'
-                    'oject_dirs/pdir_2/src/pkg/module.py'
-                ),
+<details><summary><h3 style="display:inline">Docstring</h3></summary>A """
+                'dog.</details>'
             ),
-            None,
-            allow_tables = False,
-            allow_html = False,
         ),
-        '''# Module `module`
+        (
+            PythonModuleDocumentationGenerator(
+                pathlib.Path(
+                    (
+                        'tests/unit/core/python/_core/test_pr'
+                        'oject_dirs/pdir_2/src/pkg/module.py'
+                    ),
+                ),
+                None,
+                allow_tables=False,
+                allow_html=False,
+            ),
+            """# Module `module`
 
 A test module.
 
@@ -1204,9 +1204,10 @@ Barks.
 
 ### Docstring
 
-A dog.'''
-    ),
-])
+A dog.""",
+        ),
+    ],
+)
 def test_PythonModuleDocumentationGenerator_exceptions(
     module_documentation_generator,
     expected,
diff --git a/tests/unit/core/python/_core/test__argument_kind_human_readable.py b/tests/unit/core/python/_core/test__argument_kind_human_readable.py
index 9100105..cd34bae 100644
--- a/tests/unit/core/python/_core/test__argument_kind_human_readable.py
+++ b/tests/unit/core/python/_core/test__argument_kind_human_readable.py
@@ -16,12 +16,16 @@ from src.jcloud_docsgen.core.python._core import _argument_kind_human_readable
 from src.jcloud_docsgen.core.python.arguments import PythonArgumentKind
 import pytest
 
-@pytest.mark.parametrize('argument_kind,expected', [
-    (PythonArgumentKind.NORMAL, 'normal'),
-    (PythonArgumentKind.POSITIONAL_ONLY, 'positional-only'),
-    (PythonArgumentKind.KEYWORD_ONLY, 'keyword-only'),
-    (PythonArgumentKind.VARARG, 'vararg'),
-    (PythonArgumentKind.KWARGS, 'kwargs'),
-])
+
+@pytest.mark.parametrize(
+    'argument_kind,expected',
+    [
+        (PythonArgumentKind.NORMAL, 'normal'),
+        (PythonArgumentKind.POSITIONAL_ONLY, 'positional-only'),
+        (PythonArgumentKind.KEYWORD_ONLY, 'keyword-only'),
+        (PythonArgumentKind.VARARG, 'vararg'),
+        (PythonArgumentKind.KWARGS, 'kwargs'),
+    ],
+)
 def test__argument_kind_human_readable(argument_kind, expected):
     assert _argument_kind_human_readable(argument_kind) == expected
diff --git a/tests/unit/core/python/_core/test__collect_definitions.py b/tests/unit/core/python/_core/test__collect_definitions.py
index 56e3b6e..780694a 100644
--- a/tests/unit/core/python/_core/test__collect_definitions.py
+++ b/tests/unit/core/python/_core/test__collect_definitions.py
@@ -25,8 +25,9 @@ from src.jcloud_docsgen.core.python.docstrings import PythonDocstring
 import pytest
 import ast
 
+
 def module(source_code: str) -> ast.Module:
-    '''
+    """
     Returns an AST module of the source code.
 
     :param source_code: The module source code.
@@ -34,38 +35,41 @@ def module(source_code: str) -> ast.Module:
 
     :return: The AST module.
     :rtype: ast.Module
-    '''
+    """
 
     return ast.parse(source_code)
 
-@pytest.mark.parametrize('module,expected', [
-    (
-        module('def add(a, b):\n\treturn a + b'),
-        [
-            PythonFunctionDefinition(
-                'add',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'b',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    ),
-                ],
-                None,
-                None,
-                [],
-            ),
-        ],
-    ),
-    (
-        module('''def add(a: int | float, b: int | float) -> int | float:
+
+@pytest.mark.parametrize(
+    'module,expected',
+    [
+        (
+            module('def add(a, b):\n\treturn a + b'),
+            [
+                PythonFunctionDefinition(
+                    'add',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'b',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        ),
+                    ],
+                    None,
+                    None,
+                    [],
+                ),
+            ],
+        ),
+        (
+            module('''def add(a: int | float, b: int | float) -> int | float:
     """Adds two numbers."""
     return a + b
 
@@ -89,87 +93,87 @@ class Something:
         """
         return self._value
 '''),
-        [
-            PythonFunctionDefinition(
-                'add',
-                [
-                    PythonFunctionArgument(
-                        'a',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        'int | float',
-                    ),
-                    PythonFunctionArgument(
-                        'b',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        'int | float',
-                    ),
-                ],
-                'int | float',
-                PythonDocstring('Adds two numbers.'),
-                [],
-            ),
-            PythonClassDefinition(
-                'Something',
-                [],
-                PythonDocstring('A class.'),
-                [],
-                [
-                    PythonFunctionDefinition(
-                        '__init__',
-                        [
-                            PythonFunctionArgument(
-                                'self',
-                                PythonArgumentKind.NORMAL,
-                                None,
-                                None,
-                            ),
-                            PythonFunctionArgument(
-                                'value',
-                                PythonArgumentKind.NORMAL,
-                                '42',
-                                'typing.Any',
-                            ),
-                        ],
-                        'None',
-                        None,
-                        [],
-                    ),
-                    PythonFunctionDefinition(
-                        'value',
-                        [
-                            PythonFunctionArgument(
-                                'self',
-                                PythonArgumentKind.NORMAL,
-                                None,
-                                None,
-                            ),
-                        ],
-                        'typing.Any',
-                        PythonDocstring('The value.'),
-                        ['property'],
-                    ),
-                    PythonFunctionDefinition(
-                        'get_value',
-                        [
-                            PythonFunctionArgument(
-                                'self',
-                                PythonArgumentKind.NORMAL,
-                                None,
-                                None,
-                            ),
-                        ],
-                        'typing.Any',
-                        PythonDocstring('Returns the value.'),
-                        [],
-                    ),
-                ],
-            ),
-        ],
-    ),
-    (
-        module('''from src.jcloud_docsgen.core.python import (
+            [
+                PythonFunctionDefinition(
+                    'add',
+                    [
+                        PythonFunctionArgument(
+                            'a',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            'int | float',
+                        ),
+                        PythonFunctionArgument(
+                            'b',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            'int | float',
+                        ),
+                    ],
+                    'int | float',
+                    PythonDocstring('Adds two numbers.'),
+                    [],
+                ),
+                PythonClassDefinition(
+                    'Something',
+                    [],
+                    PythonDocstring('A class.'),
+                    [],
+                    [
+                        PythonFunctionDefinition(
+                            '__init__',
+                            [
+                                PythonFunctionArgument(
+                                    'self',
+                                    PythonArgumentKind.NORMAL,
+                                    None,
+                                    None,
+                                ),
+                                PythonFunctionArgument(
+                                    'value',
+                                    PythonArgumentKind.NORMAL,
+                                    '42',
+                                    'typing.Any',
+                                ),
+                            ],
+                            'None',
+                            None,
+                            [],
+                        ),
+                        PythonFunctionDefinition(
+                            'value',
+                            [
+                                PythonFunctionArgument(
+                                    'self',
+                                    PythonArgumentKind.NORMAL,
+                                    None,
+                                    None,
+                                ),
+                            ],
+                            'typing.Any',
+                            PythonDocstring('The value.'),
+                            ['property'],
+                        ),
+                        PythonFunctionDefinition(
+                            'get_value',
+                            [
+                                PythonFunctionArgument(
+                                    'self',
+                                    PythonArgumentKind.NORMAL,
+                                    None,
+                                    None,
+                                ),
+                            ],
+                            'typing.Any',
+                            PythonDocstring('Returns the value.'),
+                            [],
+                        ),
+                    ],
+                ),
+            ],
+        ),
+        (
+            module("""from src.jcloud_docsgen.core.python import (
     PythonDocumentationGenerator
 )
 from src.jcloud_docsgen.core.python.namespaces import (
@@ -235,139 +239,142 @@ def test_PythonDocumentationGenerator_collect_modules(
     python_documentation_generator: PythonDocumentationGenerator,
     expected
 ):
-    assert python_documentation_generator.namespace() == expected'''),
-        [
-            PythonFunctionDefinition(
-                'test_PythonDocumentationGenerator_type_exceptions',
-                [
-                    PythonFunctionArgument(
-                        'project_directory',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    ),
-                    PythonFunctionArgument(
-                        'docs_directory',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    )
-                ],
-                None,
-                None,
-                [
-                    (
-                        '''pytest.mark.parametrize('project_directo'''
-                        '''ry,docs_directory', [(1, 1), (1, None), '''
-                        '''(42, None), (pathlib.Path('tests'), 1), '''
-                        '''(pathlib.Path('tests/'), 1), (1, pathlib'''
-                        '''.Path('tests/')), (1, pathlib.Path('test'''
-                        '''s')), (None, pathlib.Path('tests'))])'''
-                    ),
-                ],
-            ),
-            PythonFunctionDefinition(
-                'test_PythonDocumentationGenerator_collect_modules',
-                [
-                    PythonFunctionArgument(
-                        'python_documentation_generator',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        'PythonDocumentationGenerator',
-                    ),
-                    PythonFunctionArgument(
-                        'expected',
-                        PythonArgumentKind.NORMAL,
-                        None,
-                        None,
-                    )
-                ],
-                None,
-                None,
-                [(
-                    '''pytest.mark.parametrize('python_documentation_gener'''
-                    '''ator,expected', [(PythonDocumentationGenerator(path'''
-                    '''lib.Path('tests/unit/core/python/_core/test_project'''
-                    '''_dirs/pdir_1'), pathlib.Path('tests/unit/core/pytho'''
-                    '''n/_core/test_project_dirs/pdir_1/docs')), []), (Pyt'''
-                    '''honDocumentationGenerator(pathlib.Path('tests/unit/'''
-                    '''core/python/_core/test_project_dirs/pdir_2'), pathl'''
-                    '''ib.Path('tests/unit/core/python/_core/test_project_'''
-                    '''dirs/pdir_2/docs')), [PythonPackageNamespace('pkg','''
-                    ''' [PythonModuleNamespace('module')])]), (PythonDocum'''
-                    '''entationGenerator(pathlib.Path('tests/unit/core/pyt'''
-                    '''hon/_core/test_project_dirs/pdir_3'), pathlib.Path('''
-                    ''''tests/unit/core/python/_core/test_project_dirs/pdi'''
-                    '''r_3/docs')), [PythonPackageNamespace('pkg', [Python'''
-                    '''ModuleNamespace(\'module'), PythonPackageNamespace('''
-                    '''\'pkg\', [PythonModuleNamespace(\'module2')])])])])'''
-                )],
-            ),
-        ],
-    ),
-    (
-        module(
-            '''class C1:
+    assert python_documentation_generator.namespace() == expected"""),
+            [
+                PythonFunctionDefinition(
+                    'test_PythonDocumentationGenerator_type_exceptions',
+                    [
+                        PythonFunctionArgument(
+                            'project_directory',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        ),
+                        PythonFunctionArgument(
+                            'docs_directory',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        ),
+                    ],
+                    None,
+                    None,
+                    [
+                        (
+                            """pytest.mark.parametrize('project_directo"""
+                            """ry,docs_directory', [(1, 1), (1, None), """
+                            """(42, None), (pathlib.Path('tests'), 1), """
+                            """(pathlib.Path('tests/'), 1), (1, pathlib"""
+                            """.Path('tests/')), (1, pathlib.Path('test"""
+                            """s')), (None, pathlib.Path('tests'))])"""
+                        ),
+                    ],
+                ),
+                PythonFunctionDefinition(
+                    'test_PythonDocumentationGenerator_collect_modules',
+                    [
+                        PythonFunctionArgument(
+                            'python_documentation_generator',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            'PythonDocumentationGenerator',
+                        ),
+                        PythonFunctionArgument(
+                            'expected',
+                            PythonArgumentKind.NORMAL,
+                            None,
+                            None,
+                        ),
+                    ],
+                    None,
+                    None,
+                    [
+                        (
+                            """pytest.mark.parametrize('python_documentation_gener"""
+                            """ator,expected', [(PythonDocumentationGenerator(path"""
+                            """lib.Path('tests/unit/core/python/_core/test_project"""
+                            """_dirs/pdir_1'), pathlib.Path('tests/unit/core/pytho"""
+                            """n/_core/test_project_dirs/pdir_1/docs')), []), (Pyt"""
+                            """honDocumentationGenerator(pathlib.Path('tests/unit/"""
+                            """core/python/_core/test_project_dirs/pdir_2'), pathl"""
+                            """ib.Path('tests/unit/core/python/_core/test_project_"""
+                            """dirs/pdir_2/docs')), [PythonPackageNamespace('pkg',"""
+                            """ [PythonModuleNamespace('module')])]), (PythonDocum"""
+                            """entationGenerator(pathlib.Path('tests/unit/core/pyt"""
+                            """hon/_core/test_project_dirs/pdir_3'), pathlib.Path("""
+                            """'tests/unit/core/python/_core/test_project_dirs/pdi"""
+                            """r_3/docs')), [PythonPackageNamespace('pkg', [Python"""
+                            """ModuleNamespace(\'module'), PythonPackageNamespace("""
+                            """\'pkg\', [PythonModuleNamespace(\'module2')])])])])"""
+                        )
+                    ],
+                ),
+            ],
+        ),
+        (
+            module(
+                """class C1:
     class C2:
         class C3:
             def function(self, value: bool, /, arg) -> bool:
                 def should_be_not_in_the_result(arg: int) -> object:
                     pass
-                return not value'''
-        ),
-        [
-            PythonClassDefinition(
-                'C1',
-                [],
-                None,
-                [],
-                [
-                    PythonClassDefinition(
-                        'C2',
-                        [],
-                        None,
-                        [],
-                        [
-                            PythonClassDefinition(
-                                'C3',
-                                [],
-                                None,
-                                [],
-                                [
-                                    PythonFunctionDefinition(
-                                        'function',
-                                        [
-                                            PythonFunctionArgument(
-                                                'self',
-                                                PythonArgumentKind.POSITIONAL_ONLY,
-                                                None,
-                                                None,
-                                            ),
-                                            PythonFunctionArgument(
-                                                'value',
-                                                PythonArgumentKind.POSITIONAL_ONLY,
-                                                None,
-                                                'bool',
-                                            ),
-                                            PythonFunctionArgument(
-                                                'arg',
-                                                PythonArgumentKind.NORMAL,
-                                                None,
-                                                None,
-                                            )
-                                        ],
-                                        'bool',
-                                        None,
-                                        [],
-                                    ),
-                                ],
-                            ),
-                        ],
-                    ),
-                ],
+                return not value"""
             ),
-        ],
-    ),
-])
+            [
+                PythonClassDefinition(
+                    'C1',
+                    [],
+                    None,
+                    [],
+                    [
+                        PythonClassDefinition(
+                            'C2',
+                            [],
+                            None,
+                            [],
+                            [
+                                PythonClassDefinition(
+                                    'C3',
+                                    [],
+                                    None,
+                                    [],
+                                    [
+                                        PythonFunctionDefinition(
+                                            'function',
+                                            [
+                                                PythonFunctionArgument(
+                                                    'self',
+                                                    PythonArgumentKind.POSITIONAL_ONLY,
+                                                    None,
+                                                    None,
+                                                ),
+                                                PythonFunctionArgument(
+                                                    'value',
+                                                    PythonArgumentKind.POSITIONAL_ONLY,
+                                                    None,
+                                                    'bool',
+                                                ),
+                                                PythonFunctionArgument(
+                                                    'arg',
+                                                    PythonArgumentKind.NORMAL,
+                                                    None,
+                                                    None,
+                                                ),
+                                            ],
+                                            'bool',
+                                            None,
+                                            [],
+                                        ),
+                                    ],
+                                ),
+                            ],
+                        ),
+                    ],
+                ),
+            ],
+        ),
+    ],
+)
 def test___collect_definitions(module, expected):
     assert list(_collect_definitions(module)) == expected
diff --git a/tests/unit/core/python/_core/test__fit_row_length.py b/tests/unit/core/python/_core/test__fit_row_length.py
index 9981799..50686d8 100644
--- a/tests/unit/core/python/_core/test__fit_row_length.py
+++ b/tests/unit/core/python/_core/test__fit_row_length.py
@@ -15,41 +15,50 @@
 from src.jcloud_docsgen.core.python._core import _fit_row_length
 import pytest
 
-@pytest.mark.parametrize('expected_length,row,expected', [
-    (0, (), ()),
-    (1, (), (None,)),
-    (2, (), (None, None)),
-    (2, (1,), (1, None)),
 
-    (0, (1,), ()),
-    (1, (1, 2), (1,)),
-    (1, (1, 2), (1,)),
-    (0, (1, 2), ()),
-    (0, (1, 2, 3), ()),
-    (1, (1, 2, 3), (1,)),
-    (2, (1, 2, 3), (1, 2)),
-
-    (1, (1,), (1,)),
-    (2, (1, 1), (1, 1)),
-    (2, (1, 2), (1, 2)),
-    (3, (1, 2, 3), (1, 2, 3)),
-])
+@pytest.mark.parametrize(
+    'expected_length,row,expected',
+    [
+        (0, (), ()),
+        (1, (), (None,)),
+        (2, (), (None, None)),
+        (2, (1,), (1, None)),
+        (0, (1,), ()),
+        (1, (1, 2), (1,)),
+        (1, (1, 2), (1,)),
+        (0, (1, 2), ()),
+        (0, (1, 2, 3), ()),
+        (1, (1, 2, 3), (1,)),
+        (2, (1, 2, 3), (1, 2)),
+        (1, (1,), (1,)),
+        (2, (1, 1), (1, 1)),
+        (2, (1, 2), (1, 2)),
+        (3, (1, 2, 3), (1, 2, 3)),
+    ],
+)
 def test__fit_row_length(expected_length, row, expected):
     assert _fit_row_length(expected_length, row) == expected
 
-@pytest.mark.parametrize('row', [
-    (),
-    (1,),
-    (1, 2),
-    (1, 2, 3),
-    (1, 2, 3, 456),
-])
-@pytest.mark.parametrize('expected_length,expected_exception', [
-    (-1, ValueError),
-    (-2, ValueError),
-    (-3, ValueError),
-    (-42, ValueError),
-])
+
+@pytest.mark.parametrize(
+    'row',
+    [
+        (),
+        (1,),
+        (1, 2),
+        (1, 2, 3),
+        (1, 2, 3, 456),
+    ],
+)
+@pytest.mark.parametrize(
+    'expected_length,expected_exception',
+    [
+        (-1, ValueError),
+        (-2, ValueError),
+        (-3, ValueError),
+        (-42, ValueError),
+    ],
+)
 def test__fit_row_length_exceptions(expected_length, row, expected_exception):
     with pytest.raises(expected_exception) as exc_info:
         _fit_row_length(expected_length, row)
diff --git a/tests/unit/core/python/_core/test__function_params_info.py b/tests/unit/core/python/_core/test__function_params_info.py
index 014b4cd..825d998 100644
--- a/tests/unit/core/python/_core/test__function_params_info.py
+++ b/tests/unit/core/python/_core/test__function_params_info.py
@@ -23,10 +23,11 @@ from src.jcloud_docsgen.core.python.arguments import (
 import pytest
 import docstring_parser
 
+
 def docstring_args_list(
     docstring: str,
 ) -> list[docstring_parser.DocstringParam]:
-    '''
+    """
     Returns the parameter list of a docstring.
 
     :param docstring: The docstring
@@ -34,82 +35,164 @@ def docstring_args_list(
 
     :return: The parameter list.
     :rtype: list[docstring_parser.DocstringParam]
-    '''
+    """
 
     return docstring_parser.parse(docstring).params
 
-@pytest.mark.parametrize('arg_list,docstring,expected', [
-    ([
-        PythonFunctionArgument('a', PythonArgumentKind.NORMAL, '', 'int'),
-    ], ':param a: a\n:type a: str', {
-        'a': _FunctionParamInfo('int', 'a'),
-    }),
-    ([
-        PythonFunctionArgument('a', PythonArgumentKind.NORMAL, '', None),
-    ], ':param a: a\n:type a: str', {
-        'a': _FunctionParamInfo('str', 'a'),
-    }),
-    ([
-        PythonFunctionArgument('a', PythonArgumentKind.NORMAL, '', None),
-        PythonFunctionArgument('b', PythonArgumentKind.NORMAL, '', None),
-    ], ':param a: a\n:type a: str', {
-        'a': _FunctionParamInfo('str', 'a'),
-        'b': _FunctionParamInfo(None, None),
-    }),
-    ([
-        PythonFunctionArgument('a', PythonArgumentKind.NORMAL, '', None),
-        PythonFunctionArgument('b', PythonArgumentKind.NORMAL, '', 'int'),
-    ], ':param a: a\n:type a: str', {
-        'a': _FunctionParamInfo('str', 'a'),
-        'b': _FunctionParamInfo('int', None),
-    }),
-    ([
-        PythonFunctionArgument('a', PythonArgumentKind.NORMAL, '', None),
-        PythonFunctionArgument('b', PythonArgumentKind.NORMAL, '', 'int'),
-    ], ':param a: a\n:type a: str\n:param b: b\n:type b: str', {
-        'a': _FunctionParamInfo('str', 'a'),
-        'b': _FunctionParamInfo('int', 'b'),
-    }),
-    ([
-        PythonFunctionArgument('a', PythonArgumentKind.NORMAL, '', None),
-    ], ':param a: a\n:type a: str\n:param b: b\n:type b: int', {
-        'a': _FunctionParamInfo('str', 'a'),
-    }),
-    ([
-        PythonFunctionArgument('a', PythonArgumentKind.NORMAL, '', None),
-    ], '', {
-        'a': _FunctionParamInfo(None, None),
-    }),
-    ([
-        PythonFunctionArgument('a', PythonArgumentKind.NORMAL, '', 'str'),
-    ], '', {
-        'a': _FunctionParamInfo('str', None),
-    }),
-    ([
-        PythonFunctionArgument('a', PythonArgumentKind.NORMAL, '', 'str'),
-    ], ':param a:\n:type a: int', {
-        'a': _FunctionParamInfo('str', ''),
-    }),
-    ([
-        PythonFunctionArgument('a', PythonArgumentKind.NORMAL, '', None),
-    ], ':param a:\n:type a: int', {
-        'a': _FunctionParamInfo('int', ''),
-    }),
-    ([
-        PythonFunctionArgument('a', PythonArgumentKind.NORMAL, '', None),
-    ], ':param a: a', {
-        'a': _FunctionParamInfo(None, 'a'),
-    }),
-    ([
-        PythonFunctionArgument('a', PythonArgumentKind.NORMAL, '', 'str'),
-    ], ':param a: a', {
-        'a': _FunctionParamInfo('str', 'a'),
-    }),
-    ([], ':param a: a\n:type a: str', {}),
-    ([], '', {}),
-])
+
+@pytest.mark.parametrize(
+    'arg_list,docstring,expected',
+    [
+        (
+            [
+                PythonFunctionArgument(
+                    'a', PythonArgumentKind.NORMAL, '', 'int'
+                ),
+            ],
+            ':param a: a\n:type a: str',
+            {
+                'a': _FunctionParamInfo('int', 'a'),
+            },
+        ),
+        (
+            [
+                PythonFunctionArgument(
+                    'a', PythonArgumentKind.NORMAL, '', None
+                ),
+            ],
+            ':param a: a\n:type a: str',
+            {
+                'a': _FunctionParamInfo('str', 'a'),
+            },
+        ),
+        (
+            [
+                PythonFunctionArgument(
+                    'a', PythonArgumentKind.NORMAL, '', None
+                ),
+                PythonFunctionArgument(
+                    'b', PythonArgumentKind.NORMAL, '', None
+                ),
+            ],
+            ':param a: a\n:type a: str',
+            {
+                'a': _FunctionParamInfo('str', 'a'),
+                'b': _FunctionParamInfo(None, None),
+            },
+        ),
+        (
+            [
+                PythonFunctionArgument(
+                    'a', PythonArgumentKind.NORMAL, '', None
+                ),
+                PythonFunctionArgument(
+                    'b', PythonArgumentKind.NORMAL, '', 'int'
+                ),
+            ],
+            ':param a: a\n:type a: str',
+            {
+                'a': _FunctionParamInfo('str', 'a'),
+                'b': _FunctionParamInfo('int', None),
+            },
+        ),
+        (
+            [
+                PythonFunctionArgument(
+                    'a', PythonArgumentKind.NORMAL, '', None
+                ),
+                PythonFunctionArgument(
+                    'b', PythonArgumentKind.NORMAL, '', 'int'
+                ),
+            ],
+            ':param a: a\n:type a: str\n:param b: b\n:type b: str',
+            {
+                'a': _FunctionParamInfo('str', 'a'),
+                'b': _FunctionParamInfo('int', 'b'),
+            },
+        ),
+        (
+            [
+                PythonFunctionArgument(
+                    'a', PythonArgumentKind.NORMAL, '', None
+                ),
+            ],
+            ':param a: a\n:type a: str\n:param b: b\n:type b: int',
+            {
+                'a': _FunctionParamInfo('str', 'a'),
+            },
+        ),
+        (
+            [
+                PythonFunctionArgument(
+                    'a', PythonArgumentKind.NORMAL, '', None
+                ),
+            ],
+            '',
+            {
+                'a': _FunctionParamInfo(None, None),
+            },
+        ),
+        (
+            [
+                PythonFunctionArgument(
+                    'a', PythonArgumentKind.NORMAL, '', 'str'
+                ),
+            ],
+            '',
+            {
+                'a': _FunctionParamInfo('str', None),
+            },
+        ),
+        (
+            [
+                PythonFunctionArgument(
+                    'a', PythonArgumentKind.NORMAL, '', 'str'
+                ),
+            ],
+            ':param a:\n:type a: int',
+            {
+                'a': _FunctionParamInfo('str', ''),
+            },
+        ),
+        (
+            [
+                PythonFunctionArgument(
+                    'a', PythonArgumentKind.NORMAL, '', None
+                ),
+            ],
+            ':param a:\n:type a: int',
+            {
+                'a': _FunctionParamInfo('int', ''),
+            },
+        ),
+        (
+            [
+                PythonFunctionArgument(
+                    'a', PythonArgumentKind.NORMAL, '', None
+                ),
+            ],
+            ':param a: a',
+            {
+                'a': _FunctionParamInfo(None, 'a'),
+            },
+        ),
+        (
+            [
+                PythonFunctionArgument(
+                    'a', PythonArgumentKind.NORMAL, '', 'str'
+                ),
+            ],
+            ':param a: a',
+            {
+                'a': _FunctionParamInfo('str', 'a'),
+            },
+        ),
+        ([], ':param a: a\n:type a: str', {}),
+        ([], '', {}),
+    ],
+)
 def test__function_params_types(arg_list, docstring, expected):
-    assert _function_params_info(
-        arg_list,
-        docstring_args_list(docstring)
-    ) == expected
+    assert (
+        _function_params_info(arg_list, docstring_args_list(docstring))
+        == expected
+    )
diff --git a/tests/unit/core/python/_core/test__markdown_table.py b/tests/unit/core/python/_core/test__markdown_table.py
index 90b49b4..ac99ec1 100644
--- a/tests/unit/core/python/_core/test__markdown_table.py
+++ b/tests/unit/core/python/_core/test__markdown_table.py
@@ -15,6 +15,7 @@
 from src.jcloud_docsgen.core.python._core import _markdown_table
 import pytest
 
+
 @pytest.mark.parametrize(
     (
         'header,body,allow_markdown_table,force_row_le'
@@ -55,9 +56,9 @@ import pytest
             False,
             True,
             '--',
-            '''| a |
+            """| a |
 | --- |
-| 1 |''',
+| 1 |""",
         ),
         (
             ['a'],
@@ -66,9 +67,9 @@ import pytest
             False,
             True,
             '--',
-            '''| a |
+            """| a |
 | --- |
-| 1 |''',
+| 1 |""",
         ),
         (
             ['a', 'b'],
@@ -77,9 +78,9 @@ import pytest
             False,
             True,
             '--',
-            '''| a | b |
+            """| a | b |
 | --- | --- |
-| 1 | 2 |''',
+| 1 | 2 |""",
         ),
         (
             ['a', 'b'],
@@ -88,9 +89,9 @@ import pytest
             False,
             True,
             '--',
-            '''| a | b |
+            """| a | b |
 | --- | --- |
-| 1 | -- |''',
+| 1 | -- |""",
         ),
         (
             ['a', 'b'],
@@ -99,9 +100,9 @@ import pytest
             False,
             True,
             '--',
-            '''| a | b |
+            """| a | b |
 | --- | --- |
-| -- | -- |''',
+| -- | -- |""",
         ),
         (
             ['a', 'b'],
@@ -110,10 +111,10 @@ import pytest
             False,
             True,
             '--',
-            '''| a | b |
+            """| a | b |
 | --- | --- |
 | 1 | 2 |
-| 3 | 4 |''',
+| 3 | 4 |""",
         ),
         (
             ['a'],
@@ -122,9 +123,9 @@ import pytest
             False,
             True,
             '--',
-            '''| a |
+            """| a |
 | --- |
-| line1 line2 |''',
+| line1 line2 |""",
         ),
         (
             ['a'],
@@ -133,11 +134,10 @@ import pytest
             False,
             False,
             '--',
-            '''| a |
+            """| a |
 | --- |
-| line1\nline2 |''',
+| line1\nline2 |""",
         ),
-
         (
             [],
             [],
@@ -190,9 +190,9 @@ import pytest
             False,
             True,
             '--',
-            '''- a: 1
+            """- a: 1
 
-  b: 2''',
+  b: 2""",
         ),
         (
             ['a', 'b'],
@@ -201,9 +201,9 @@ import pytest
             False,
             True,
             '--',
-            '''- a: 1
+            """- a: 1
 
-  b: --''',
+  b: --""",
         ),
         (
             ['a', 'b'],
@@ -212,9 +212,9 @@ import pytest
             False,
             True,
             '--',
-            '''- a: --
+            """- a: --
 
-  b: --''',
+  b: --""",
         ),
         (
             ['a', 'b'],
@@ -223,13 +223,13 @@ import pytest
             False,
             True,
             '--',
-            '''- a: 1
+            """- a: 1
 
   b: 2
 
 - a: 3
 
-  b: 4''',
+  b: 4""",
         ),
         (
             ['a'],
@@ -260,14 +260,18 @@ def test__markdown_table(
     missing_value,
     expected,
 ):
-    assert _markdown_table(
-        header,
-        body,
-        allow_markdown_table = allow_markdown_table,
-        force_row_lengths = force_row_lengths,
-        one_line_values = one_line_values,
-        missing_value = missing_value,
-    ) == expected
+    assert (
+        _markdown_table(
+            header,
+            body,
+            allow_markdown_table=allow_markdown_table,
+            force_row_lengths=force_row_lengths,
+            one_line_values=one_line_values,
+            missing_value=missing_value,
+        )
+        == expected
+    )
+
 
 @pytest.mark.parametrize(
     (
@@ -335,7 +339,6 @@ def test__markdown_table(
             ValueError,
             'expected 2 values, got 3',
         ),
-
         (
             ['a'],
             [(1, 2)],
@@ -412,9 +415,9 @@ def test__markdown_table_exceptions(
         _markdown_table(
             header,
             body,
-            allow_markdown_table = allow_markdown_table,
-            force_row_lengths = force_row_lengths,
-            one_line_values = one_line_values,
-            missing_value = missing_value,
+            allow_markdown_table=allow_markdown_table,
+            force_row_lengths=force_row_lengths,
+            one_line_values=one_line_values,
+            missing_value=missing_value,
         )
     assert str(exc_info.value) == expected_exception_msg
diff --git a/tests/unit/core/python/_core/test__signature_argument_list.py b/tests/unit/core/python/_core/test__signature_argument_list.py
index b586e4b..485c6ef 100644
--- a/tests/unit/core/python/_core/test__signature_argument_list.py
+++ b/tests/unit/core/python/_core/test__signature_argument_list.py
@@ -19,266 +19,328 @@ from src.jcloud_docsgen.core.python.arguments import (
 )
 import pytest
 
-@pytest.mark.parametrize('argument_list,expected', [
-    ([
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.NORMAL,
-            None,
-            None,
+
+@pytest.mark.parametrize(
+    'argument_list,expected',
+    [
+        (
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+            ],
+            ['a'],
         ),
-    ], ['a']),
-    ([
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.POSITIONAL_ONLY,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+            ],
+            ['a', '/'],
         ),
-    ], ['a', '/']),
-    ([
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.POSITIONAL_ONLY,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+            ],
+            ['a', '/', 'b'],
         ),
-        PythonFunctionArgument(
-            'b',
-            PythonArgumentKind.NORMAL,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+            ],
+            ['a', '/', 'b', '*', 'c'],
         ),
-    ], ['a', '/', 'b']),
-    ([
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.POSITIONAL_ONLY,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+            ],
+            ['b', '*', 'c'],
         ),
-        PythonFunctionArgument(
-            'b',
-            PythonArgumentKind.NORMAL,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+            ],
+            ['*', 'c'],
         ),
-        PythonFunctionArgument(
-            'c',
-            PythonArgumentKind.KEYWORD_ONLY,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+            ],
+            ['b', '/', '*', 'c'],
         ),
-    ], ['a', '/', 'b', '*', 'c']),
-    ([
-        PythonFunctionArgument(
-            'b',
-            PythonArgumentKind.NORMAL,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                )
+            ],
+            ['*args'],
         ),
-        PythonFunctionArgument(
-            'c',
-            PythonArgumentKind.KEYWORD_ONLY,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+            ],
+            ['a', '*args'],
         ),
-    ], ['b', '*', 'c']),
-    ([
-        PythonFunctionArgument(
-            'c',
-            PythonArgumentKind.KEYWORD_ONLY,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+            ],
+            ['a', '/', '*args'],
         ),
-    ], ['*', 'c']),
-    ([
-        PythonFunctionArgument(
-            'b',
-            PythonArgumentKind.POSITIONAL_ONLY,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+            ],
+            ['*args', 'a'],
         ),
-        PythonFunctionArgument(
-            'c',
-            PythonArgumentKind.KEYWORD_ONLY,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+            ['*args', '**kwargs'],
         ),
-    ], ['b', '/', '*', 'c']),
-    ([
-        PythonFunctionArgument(
-            'args',
-            PythonArgumentKind.VARARG,
-            None,
-            None,
-        )
-    ], ['*args']),
-    ([
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.NORMAL,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+            ['a', '/', '*args', '**kwargs'],
         ),
-        PythonFunctionArgument(
-            'args',
-            PythonArgumentKind.VARARG,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+            ['a', '*args', '**kwargs'],
         ),
-    ], ['a', '*args']),
-    ([
-        PythonFunctionArgument(
-            'a', PythonArgumentKind.POSITIONAL_ONLY,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+            ['*args', 'a', '**kwargs'],
         ),
-        PythonFunctionArgument(
-            'args',
-            PythonArgumentKind.VARARG,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+            ['*', 'a', '**kwargs'],
         ),
-    ], ['a', '/', '*args']),
-    ([
-        PythonFunctionArgument(
-            'args',
-            PythonArgumentKind.VARARG,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+            ['a', '**kwargs'],
         ),
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.KEYWORD_ONLY,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+            ['a', '/', '**kwargs'],
         ),
-    ], ['*args', 'a']),
-    ([
-        PythonFunctionArgument(
-            'args',
-            PythonArgumentKind.VARARG,
-            None,
-            None,
+        (
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    '1',
+                    'int',
+                ),
+            ],
+            ['a: int = 1'],
         ),
-        PythonFunctionArgument(
-            'kwargs',
-            PythonArgumentKind.KWARGS,
-            None,
-            None,
-        ),
-    ], ['*args', '**kwargs']),
-    ([
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.POSITIONAL_ONLY,
-            None,
-            None,
-        ),
-        PythonFunctionArgument(
-            'args',
-            PythonArgumentKind.VARARG,
-            None,
-            None,
-        ),
-        PythonFunctionArgument(
-            'kwargs',
-            PythonArgumentKind.KWARGS,
-            None,
-            None,
-        ),
-    ], ['a', '/', '*args', '**kwargs']),
-    ([
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.NORMAL,
-            None,
-            None,
-        ),
-        PythonFunctionArgument(
-            'args',
-            PythonArgumentKind.VARARG,
-            None,
-            None,
-        ),
-        PythonFunctionArgument(
-            'kwargs',
-            PythonArgumentKind.KWARGS,
-            None,
-            None,
-        ),
-    ], ['a', '*args', '**kwargs']),
-    ([
-        PythonFunctionArgument(
-            'args',
-            PythonArgumentKind.VARARG,
-            None,
-            None,
-        ),
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.KEYWORD_ONLY,
-            None,
-            None,
-        ),
-        PythonFunctionArgument(
-            'kwargs',
-            PythonArgumentKind.KWARGS,
-            None,
-            None,
-        ),
-    ], ['*args', 'a', '**kwargs']),
-    ([
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.KEYWORD_ONLY,
-            None,
-            None,
-        ),
-        PythonFunctionArgument(
-            'kwargs',
-            PythonArgumentKind.KWARGS,
-            None,
-            None,
-        ),
-    ], ['*', 'a', '**kwargs']),
-    ([
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.NORMAL,
-            None,
-            None,
-        ),
-        PythonFunctionArgument(
-            'kwargs',
-            PythonArgumentKind.KWARGS,
-            None,
-            None,
-        ),
-    ], ['a', '**kwargs']),
-    ([
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.POSITIONAL_ONLY,
-            None,
-            None,
-        ),
-        PythonFunctionArgument(
-            'kwargs',
-            PythonArgumentKind.KWARGS,
-            None,
-            None,
-        ),
-    ], ['a', '/', '**kwargs']),
-    ([
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.NORMAL,
-            '1',
-            'int',
-        ),
-    ], ['a: int = 1']),
-])
+    ],
+)
 def test__signature_argument_list(argument_list, expected):
     assert _signature_argument_list(argument_list) == expected
diff --git a/tests/unit/core/python/_core/test_project_dirs/pdir_2/src/pkg/module.py b/tests/unit/core/python/_core/test_project_dirs/pdir_2/src/pkg/module.py
index b44f01e..7da0ee4 100644
--- a/tests/unit/core/python/_core/test_project_dirs/pdir_2/src/pkg/module.py
+++ b/tests/unit/core/python/_core/test_project_dirs/pdir_2/src/pkg/module.py
@@ -1,9 +1,10 @@
-'''
+"""
 A test module.
-'''
+"""
+
 
 def add(a: int | float, b: int | float) -> int | float:
-    '''
+    """
     Adds two numbers.
 
     :param a: The first number.
@@ -13,38 +14,41 @@ def add(a: int | float, b: int | float) -> int | float:
 
     :return: The sum.
     :rtype: int | float
-    '''
+    """
 
     return a + b
 
+
 class Animal:
-    '''
+    """
     A class representing an animal.
 
     :param name: Its name.
     :type name: str
-    '''
+    """
+
     def __init__(self, name: str) -> None:
         self.name = name
 
     def greet(self):
-        '''
+        """
         Returns a greeting.
 
         :return: The greeting.
         :rtype: str
-        '''
+        """
 
         return f'Hi there! My name is {self.name}'
 
+
 class Dog(Animal):
-    '''
+    """
     A dog.
-    '''
+    """
 
     def bark(self) -> None:
-        '''
+        """
         Barks.
-        '''
+        """
 
         print('Woof!')
diff --git a/tests/unit/core/python/arguments/test_PythonASTArgumentsListParser.py b/tests/unit/core/python/arguments/test_PythonASTArgumentsListParser.py
index 2b1a8b8..bb11dec 100644
--- a/tests/unit/core/python/arguments/test_PythonASTArgumentsListParser.py
+++ b/tests/unit/core/python/arguments/test_PythonASTArgumentsListParser.py
@@ -20,8 +20,9 @@ from src.jcloud_docsgen.core.python.arguments import (
 import pytest
 import ast
 
+
 def argument_list(argument_list: str) -> ast.arguments:
-    '''
+    """
     Returns an AST argument list from the argument list source code
 
     :param argument_list: The argument list.
@@ -29,916 +30,922 @@ def argument_list(argument_list: str) -> ast.arguments:
 
     :return: The AST argument list.
     :rtype: ast.arguments
-    '''
+    """
 
     return ast.parse('def func(' + argument_list + '): ...').body[0].args
 
-@pytest.mark.parametrize('ast_arguments_list,expected', [
-    (
-        argument_list('a'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a: str'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                'str',
-            ),
-        ],
-    ),
-    (
-        argument_list('a: str | int'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                'str | int',
-            ),
-        ],
-    ),
-    (
-        argument_list('a: str, b'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                'str',
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a: str, b: int'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                'str',
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                'int',
-            ),
-        ],
-    ),
-    (
-        argument_list('a, b: int'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                'int',
-            ),
-        ],
-    ),
-    (
-        argument_list('a, b, *args'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a: int, b, *args'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                'int',
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a, b: str, *args'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                'str',
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a: int, b: str, *args'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                'int',
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                'str',
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a: int, b: str, *args: float'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                'int',
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                'str',
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                'float',
-            ),
-        ],
-    ),
-    (
-        argument_list('a: int, b, *args: float'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                'int',
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                'float',
-            ),
-        ],
-    ),
-    (
-        argument_list('a: int, *args: float'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                'int',
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                'float',
-            ),
-        ],
-    ),
-    (
-        argument_list('a: int, /, **kwargs'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                'int',
-            ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a: int, **kwargs: str'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                'int',
-            ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                'str',
-            ),
-        ],
-    ),
-    (
-        argument_list('a: int, /, b, **kwargs'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                'int',
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a: int, /, b'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                'int',
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a: int, /, b, *, c'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                'int',
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a, b, *, c'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a, b, *args, c'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a, b, *args, c, **kwargs'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a, b, /, *, c, **kwargs'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a, b, /, c, *, d, **kwargs'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.NORMAL,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'd',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list(
-            (
-                'a: str, b: int, /, c: float, d: list,'
-                ' *, e: tuple, f: dict, **kwargs: set'
-            ),
+
+@pytest.mark.parametrize(
+    'ast_arguments_list,expected',
+    [
+        (
+            argument_list('a'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+            ],
         ),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                'str',
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                'int',
-            ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.NORMAL,
-                None,
-                'float',
-            ),
-            PythonFunctionArgument(
-                'd',
-                PythonArgumentKind.NORMAL,
-                None,
-                'list',
-            ),
-            PythonFunctionArgument(
-                'e',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                'tuple',
-            ),
-            PythonFunctionArgument(
-                'f',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                'dict',
-            ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                'set',
-            ),
-        ],
-    ),
-    (
-        argument_list(
-            (
-                'a: str, b: int, /, c: float, d: list, *arg'
-                's: bytes, e: tuple, f: dict, **kwargs: set'
-            ),
+        (
+            argument_list('a: str'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'str',
+                ),
+            ],
         ),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                'str',
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                'int',
-            ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.NORMAL,
-                None,
-                'float',
-            ),
-            PythonFunctionArgument(
-                'd',
-                PythonArgumentKind.NORMAL,
-                None,
-                'list',
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                'bytes',
-            ),
-            PythonFunctionArgument(
-                'e',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                'tuple',
-            ),
-            PythonFunctionArgument(
-                'f',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                'dict',
-            ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                'set',
-            ),
-        ],
-    ),
-    (
-        argument_list(
-            (
-                'a: str, b: int, /, *args: bytes, '
-                'c: tuple, d: dict, **kwargs: set'
-            ),
+        (
+            argument_list('a: str | int'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'str | int',
+                ),
+            ],
         ),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                'str',
+        (
+            argument_list('a: str, b'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'str',
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a: str, b: int'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'str',
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'int',
+                ),
+            ],
+        ),
+        (
+            argument_list('a, b: int'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'int',
+                ),
+            ],
+        ),
+        (
+            argument_list('a, b, *args'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a: int, b, *args'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'int',
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a, b: str, *args'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'str',
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a: int, b: str, *args'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'int',
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'str',
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a: int, b: str, *args: float'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'int',
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'str',
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    'float',
+                ),
+            ],
+        ),
+        (
+            argument_list('a: int, b, *args: float'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'int',
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    'float',
+                ),
+            ],
+        ),
+        (
+            argument_list('a: int, *args: float'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'int',
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    'float',
+                ),
+            ],
+        ),
+        (
+            argument_list('a: int, /, **kwargs'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    'int',
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a: int, **kwargs: str'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'int',
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    'str',
+                ),
+            ],
+        ),
+        (
+            argument_list('a: int, /, b, **kwargs'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    'int',
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a: int, /, b'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    'int',
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a: int, /, b, *, c'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    'int',
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a, b, *, c'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a, b, *args, c'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a, b, *args, c, **kwargs'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a, b, /, *, c, **kwargs'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a, b, /, c, *, d, **kwargs'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'd',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list(
+                (
+                    'a: str, b: int, /, c: float, d: list,'
+                    ' *, e: tuple, f: dict, **kwargs: set'
+                ),
             ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                'int',
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    'str',
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    'int',
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'float',
+                ),
+                PythonFunctionArgument(
+                    'd',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'list',
+                ),
+                PythonFunctionArgument(
+                    'e',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    'tuple',
+                ),
+                PythonFunctionArgument(
+                    'f',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    'dict',
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    'set',
+                ),
+            ],
+        ),
+        (
+            argument_list(
+                (
+                    'a: str, b: int, /, c: float, d: list, *arg'
+                    's: bytes, e: tuple, f: dict, **kwargs: set'
+                ),
             ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                'bytes',
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    'str',
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    'int',
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'float',
+                ),
+                PythonFunctionArgument(
+                    'd',
+                    PythonArgumentKind.NORMAL,
+                    None,
+                    'list',
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    'bytes',
+                ),
+                PythonFunctionArgument(
+                    'e',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    'tuple',
+                ),
+                PythonFunctionArgument(
+                    'f',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    'dict',
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    'set',
+                ),
+            ],
+        ),
+        (
+            argument_list(
+                (
+                    'a: str, b: int, /, *args: bytes, '
+                    'c: tuple, d: dict, **kwargs: set'
+                ),
             ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                'tuple',
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    'str',
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    'int',
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    'bytes',
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    'tuple',
+                ),
+                PythonFunctionArgument(
+                    'd',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    'dict',
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    'set',
+                ),
+            ],
+        ),
+        (
+            argument_list(
+                "a = 1, b = 'a', /, *args, c = None, d = True, **kwargs",
             ),
-            PythonFunctionArgument(
-                'd',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                'dict',
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    '1',
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    "'a'",
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    'None',
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'd',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    'True',
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list(
+                "a, b = 'a', /, *args, c = None, d = True, **kwargs"
             ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                'set',
-            ),
-        ],
-    ),
-    (
-        argument_list(
-            'a = 1, b = \'a\', /, *args, c = None, d = True, **kwargs',
-        ), [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                '1',
-                None,
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                '\'a\'',
-                None,
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.KEYWORD_ONLY,
-                'None',
-                None,
-            ),
-            PythonFunctionArgument(
-                'd',
-                PythonArgumentKind.KEYWORD_ONLY,
-                'True',
-                None,
-            ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a, b = \'a\', /, *args, c = None, d = True, **kwargs'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                '\'a\'',
-                None,
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.KEYWORD_ONLY,
-                'None',
-                None
-            ),
-            PythonFunctionArgument(
-                'd',
-                PythonArgumentKind.KEYWORD_ONLY,
-                'True',
-                None,
-            ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a, b , /, *args, c = None, d = True, **kwargs'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.KEYWORD_ONLY,
-                'None',
-                None,
-            ),
-            PythonFunctionArgument(
-                'd',
-                PythonArgumentKind.KEYWORD_ONLY,
-                'True',
-                None,
-            ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a, b , /, *args, c, d = True, **kwargs'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'd',
-                PythonArgumentKind.KEYWORD_ONLY,
-                'True',
-                None,
-            ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a, b , /, *args, c, d, **kwargs'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'd',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a, b , /, *args, c = None, d, **kwargs'), [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'b',
-                PythonArgumentKind.POSITIONAL_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'args',
-                PythonArgumentKind.VARARG,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'c',
-                PythonArgumentKind.KEYWORD_ONLY,
-                'None',
-                None,
-            ),
-            PythonFunctionArgument(
-                'd',
-                PythonArgumentKind.KEYWORD_ONLY,
-                None,
-                None,
-            ),
-            PythonFunctionArgument(
-                'kwargs',
-                PythonArgumentKind.KWARGS,
-                None,
-                None,
-            ),
-        ],
-    ),
-    (
-        argument_list('a = 1'),
-        [
-            PythonFunctionArgument(
-                'a',
-                PythonArgumentKind.NORMAL,
-                '1',
-                None,
-            ),
-        ],
-    ),
-])
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    "'a'",
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c', PythonArgumentKind.KEYWORD_ONLY, 'None', None
+                ),
+                PythonFunctionArgument(
+                    'd',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    'True',
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a, b , /, *args, c = None, d = True, **kwargs'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    'None',
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'd',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    'True',
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a, b , /, *args, c, d = True, **kwargs'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'd',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    'True',
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a, b , /, *args, c, d, **kwargs'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'd',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a, b , /, *args, c = None, d, **kwargs'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'b',
+                    PythonArgumentKind.POSITIONAL_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'args',
+                    PythonArgumentKind.VARARG,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'c',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    'None',
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'd',
+                    PythonArgumentKind.KEYWORD_ONLY,
+                    None,
+                    None,
+                ),
+                PythonFunctionArgument(
+                    'kwargs',
+                    PythonArgumentKind.KWARGS,
+                    None,
+                    None,
+                ),
+            ],
+        ),
+        (
+            argument_list('a = 1'),
+            [
+                PythonFunctionArgument(
+                    'a',
+                    PythonArgumentKind.NORMAL,
+                    '1',
+                    None,
+                ),
+            ],
+        ),
+    ],
+)
 def test_PythonASTArgumentsListParser_to_argument_list(
     ast_arguments_list,
     expected,
 ):
-    assert PythonASTArgumentsListParser(
-        ast_arguments_list
-    ).to_argument_list() == expected
+    assert (
+        PythonASTArgumentsListParser(ast_arguments_list).to_argument_list()
+        == expected
+    )
diff --git a/tests/unit/core/python/arguments/test_PythonFunctionArgument.py b/tests/unit/core/python/arguments/test_PythonFunctionArgument.py
index ec6747d..5ba42b6 100644
--- a/tests/unit/core/python/arguments/test_PythonFunctionArgument.py
+++ b/tests/unit/core/python/arguments/test_PythonFunctionArgument.py
@@ -23,6 +23,7 @@ from src.jcloud_docsgen.exceptions import (
 )
 import pytest
 
+
 @pytest.mark.parametrize(
     'name,kind,default,annotation,expected_exception,expected_exception_msg',
     [
@@ -32,7 +33,7 @@ import pytest
             None,
             None,
             TypeError,
-            'expected \'str\', got \'NoneType\'',
+            "expected 'str', got 'NoneType'",
         ),
         (
             1,
@@ -40,7 +41,7 @@ import pytest
             None,
             None,
             TypeError,
-            'expected \'str\', got \'int\'',
+            "expected 'str', got 'int'",
         ),
         (
             42,
@@ -48,7 +49,7 @@ import pytest
             None,
             None,
             TypeError,
-            'expected \'str\', got \'int\'',
+            "expected 'str', got 'int'",
         ),
         (
             4.2,
@@ -56,7 +57,7 @@ import pytest
             None,
             None,
             TypeError,
-            'expected \'str\', got \'float\'',
+            "expected 'str', got 'float'",
         ),
         (
             4.2,
@@ -64,7 +65,7 @@ import pytest
             None,
             None,
             TypeError,
-            'expected \'str\', got \'float\'',
+            "expected 'str', got 'float'",
         ),
         (
             'a',
@@ -72,7 +73,7 @@ import pytest
             1,
             None,
             TypeError,
-            'expected either \'str\' or \'NoneType\', got \'int\'',
+            "expected either 'str' or 'NoneType', got 'int'",
         ),
         (
             'a',
@@ -80,7 +81,7 @@ import pytest
             None,
             1,
             TypeError,
-            'expected either \'str\' or \'NoneType\', got \'int\'',
+            "expected either 'str' or 'NoneType', got 'int'",
         ),
         (
             'a',
@@ -88,7 +89,7 @@ import pytest
             None,
             None,
             TypeError,
-            'expected \'PythonArgumentKind\', got \'int\'',
+            "expected 'PythonArgumentKind', got 'int'",
         ),
         (
             'a',
@@ -384,220 +385,244 @@ def test_PythonFunctionArgument_exceptions(
         PythonFunctionArgument(name, kind, default, annotation)
     assert str(exc_info.value) == expected_exception_msg
 
-@pytest.mark.parametrize('name', [
-    'a',
-    '_a',
-    'a1',
-    'a0',
-    'a_',
-    '_',
-    '_abc',
-    'abc',
-    'abc_',
-    'match',
-    'case',
-    'type',
-    'ä',
-    'none',
-    'true',
-    'false',
-])
-@pytest.mark.parametrize('kind', [
-    PythonArgumentKind.NORMAL,
-    PythonArgumentKind.POSITIONAL_ONLY,
-    PythonArgumentKind.KEYWORD_ONLY,
-])
-@pytest.mark.parametrize('default', [
-    None,
-    'x',
-    '1',
-    None,
-])
-@pytest.mark.parametrize('annotation', [
-    None,
-    'a',
-    'list[int]',
-    '_',
-])
+
+@pytest.mark.parametrize(
+    'name',
+    [
+        'a',
+        '_a',
+        'a1',
+        'a0',
+        'a_',
+        '_',
+        '_abc',
+        'abc',
+        'abc_',
+        'match',
+        'case',
+        'type',
+        'ä',
+        'none',
+        'true',
+        'false',
+    ],
+)
+@pytest.mark.parametrize(
+    'kind',
+    [
+        PythonArgumentKind.NORMAL,
+        PythonArgumentKind.POSITIONAL_ONLY,
+        PythonArgumentKind.KEYWORD_ONLY,
+    ],
+)
+@pytest.mark.parametrize(
+    'default',
+    [
+        None,
+        'x',
+        '1',
+        None,
+    ],
+)
+@pytest.mark.parametrize(
+    'annotation',
+    [
+        None,
+        'a',
+        'list[int]',
+        '_',
+    ],
+)
 def test_PythonFunctionArgument(name, kind, default, annotation):
     PythonFunctionArgument(name, kind, default, annotation)
 
-@pytest.mark.parametrize('name', [
-    'a',
-    '_a',
-    'a1',
-    'a0',
-    'a_',
-    '_',
-    '_abc',
-    'abc',
-    'abc_',
-    'match',
-    'case',
-    'type',
-    'ä',
-    'none',
-    'true',
-    'false',
-])
-@pytest.mark.parametrize('kind', [
-    PythonArgumentKind.VARARG,
-    PythonArgumentKind.KWARGS,
-])
-@pytest.mark.parametrize('annotation', [
-    None,
-    'a',
-    'list[int]',
-    '_',
-])
+
+@pytest.mark.parametrize(
+    'name',
+    [
+        'a',
+        '_a',
+        'a1',
+        'a0',
+        'a_',
+        '_',
+        '_abc',
+        'abc',
+        'abc_',
+        'match',
+        'case',
+        'type',
+        'ä',
+        'none',
+        'true',
+        'false',
+    ],
+)
+@pytest.mark.parametrize(
+    'kind',
+    [
+        PythonArgumentKind.VARARG,
+        PythonArgumentKind.KWARGS,
+    ],
+)
+@pytest.mark.parametrize(
+    'annotation',
+    [
+        None,
+        'a',
+        'list[int]',
+        '_',
+    ],
+)
 def test_PythonFunctionArgument_asterik(name, kind, annotation):
     PythonFunctionArgument(name, kind, None, annotation)
 
-@pytest.mark.parametrize('argument,expected', [
-    (
-        PythonFunctionArgument(
+
+@pytest.mark.parametrize(
+    'argument,expected',
+    [
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.NORMAL,
+                None,
+                None,
+            ),
             'a',
-            PythonArgumentKind.NORMAL,
-            None,
-            None,
         ),
-        'a',
-    ),
-    (
-        PythonFunctionArgument(
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.NORMAL,
+                '1',
+                None,
+            ),
+            'a = 1',
+        ),
+        (
+            PythonFunctionArgument(
+                'a', PythonArgumentKind.NORMAL, None, 'int'
+            ),
+            'a: int',
+        ),
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.NORMAL,
+                '1',
+                'int',
+            ),
+            'a: int = 1',
+        ),
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.POSITIONAL_ONLY,
+                None,
+                None,
+            ),
             'a',
-            PythonArgumentKind.NORMAL,
-            '1',
-            None,
         ),
-        'a = 1',
-    ),
-    (
-        PythonFunctionArgument(
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.POSITIONAL_ONLY,
+                '1',
+                None,
+            ),
+            'a = 1',
+        ),
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.POSITIONAL_ONLY,
+                None,
+                'int',
+            ),
+            'a: int',
+        ),
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.POSITIONAL_ONLY,
+                '1',
+                'int',
+            ),
+            'a: int = 1',
+        ),
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.KEYWORD_ONLY,
+                None,
+                None,
+            ),
             'a',
-            PythonArgumentKind.NORMAL,
-            None,
-            'int'
         ),
-        'a: int',
-    ),
-    (
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.NORMAL,
-            '1',
-            'int',
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.KEYWORD_ONLY,
+                '1',
+                None,
+            ),
+            'a = 1',
         ),
-        'a: int = 1',
-    ),
-    (
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.POSITIONAL_ONLY,
-            None,
-            None,
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.KEYWORD_ONLY,
+                None,
+                'int',
+            ),
+            'a: int',
         ),
-        'a',
-    ),
-    (
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.POSITIONAL_ONLY,
-            '1',
-            None,
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.KEYWORD_ONLY,
+                '1',
+                'int',
+            ),
+            'a: int = 1',
         ),
-        'a = 1',
-    ),
-    (
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.POSITIONAL_ONLY,
-            None,
-            'int',
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.VARARG,
+                None,
+                None,
+            ),
+            '*a',
         ),
-        'a: int',
-    ),
-    (
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.POSITIONAL_ONLY,
-            '1',
-            'int',
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.VARARG,
+                None,
+                'int',
+            ),
+            '*a: int',
         ),
-        'a: int = 1',
-    ),
-    (
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.KEYWORD_ONLY,
-            None,
-            None,
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.KWARGS,
+                None,
+                None,
+            ),
+            '**a',
         ),
-        'a',
-    ),
-    (
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.KEYWORD_ONLY,
-            '1',
-            None,
+        (
+            PythonFunctionArgument(
+                'a',
+                PythonArgumentKind.KWARGS,
+                None,
+                'int',
+            ),
+            '**a: int',
         ),
-        'a = 1',
-    ),
-    (
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.KEYWORD_ONLY,
-            None,
-            'int',
-        ),
-        'a: int',
-    ),
-    (
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.KEYWORD_ONLY,
-            '1',
-            'int',
-        ),
-        'a: int = 1',
-    ),
-    (
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.VARARG,
-            None,
-            None,
-        ),
-        '*a',
-    ),
-    (
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.VARARG,
-            None,
-            'int',
-        ),
-        '*a: int',
-    ),
-    (
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.KWARGS,
-            None,
-            None,
-        ),
-        '**a',
-    ),
-    (
-        PythonFunctionArgument(
-            'a',
-            PythonArgumentKind.KWARGS,
-            None,
-            'int',
-        ),
-        '**a: int',
-    ),
-])
+    ],
+)
 def test_PythonFunctionArgument_signature_repr(argument, expected):
     assert argument.signature_repr() == expected
diff --git a/tests/unit/core/python/definitions/test_PythonClassDefinition.py b/tests/unit/core/python/definitions/test_PythonClassDefinition.py
index 6bd3c51..b2f1291 100644
--- a/tests/unit/core/python/definitions/test_PythonClassDefinition.py
+++ b/tests/unit/core/python/definitions/test_PythonClassDefinition.py
@@ -25,31 +25,35 @@ from src.jcloud_docsgen.exceptions import InvalidPythonIdentifierError
 from tests.utils.ast_node import ast_node
 import pytest
 
-@pytest.mark.parametrize('definition,expected', [
-    (
-        PythonClassDefinition(
-            'A',
-            [],
-            None,
-            None,
-            [],
-        ),
-        'PythonClassDefinition(\'A\', [], None, None, [])',
-    ),
-    (
-        PythonClassDefinition(
-            'A',
-            [],
-            None,
-            PythonDocstring('Hello, World!'),
-            [],
+
+@pytest.mark.parametrize(
+    'definition,expected',
+    [
+        (
+            PythonClassDefinition(
+                'A',
+                [],
+                None,
+                None,
+                [],
+            ),
+            "PythonClassDefinition('A', [], None, None, [])",
         ),
         (
-            'PythonClassDefinition(\'A\', [], None, '
-            'PythonDocstring(\'Hello, World!\'), [])'
+            PythonClassDefinition(
+                'A',
+                [],
+                None,
+                PythonDocstring('Hello, World!'),
+                [],
+            ),
+            (
+                "PythonClassDefinition('A', [], None, "
+                "PythonDocstring('Hello, World!'), [])"
+            ),
         ),
-    ),
-])
+    ],
+)
 def test_PythonDefinition_string_representation(definition, expected):
     assert repr(definition) == expected
 
@@ -364,129 +368,132 @@ def test_PythonFunctionDefinition_exceptions(
     assert str(exc_info.value) == expected_exception_message
 
 
-@pytest.mark.parametrize('node,expected', [
-    (
-        ast_node(
-            (
-                '@decorator\nclass Class(BaseClass1, BaseClass2)'
-                ':\n\tdef __init__(self, value: object) -> None:'
-                '\n\t\tself._value = value\n\n\t@property\n\tdef'
-                ' value(self) -> object:\n\t\treturn self._value'
+@pytest.mark.parametrize(
+    'node,expected',
+    [
+        (
+            ast_node(
+                (
+                    '@decorator\nclass Class(BaseClass1, BaseClass2)'
+                    ':\n\tdef __init__(self, value: object) -> None:'
+                    '\n\t\tself._value = value\n\n\t@property\n\tdef'
+                    ' value(self) -> object:\n\t\treturn self._value'
+                ),
+            ),
+            PythonClassDefinition(
+                'Class',
+                ['BaseClass1', 'BaseClass2'],
+                None,
+                ['decorator'],
+                [
+                    PythonFunctionDefinition(
+                        '__init__',
+                        [
+                            PythonFunctionArgument(
+                                'self',
+                                PythonArgumentKind.NORMAL,
+                                None,
+                                None,
+                            ),
+                            PythonFunctionArgument(
+                                'value',
+                                PythonArgumentKind.NORMAL,
+                                None,
+                                'object',
+                            ),
+                        ],
+                        'None',
+                        None,
+                        [],
+                    ),
+                    PythonFunctionDefinition(
+                        'value',
+                        [
+                            PythonFunctionArgument(
+                                'self',
+                                PythonArgumentKind.NORMAL,
+                                None,
+                                None,
+                            ),
+                        ],
+                        'object',
+                        None,
+                        ['property'],
+                    ),
+                ],
             ),
         ),
-        PythonClassDefinition(
-            'Class',
-            ['BaseClass1', 'BaseClass2'],
-            None,
-            ['decorator'],
-            [
-                PythonFunctionDefinition(
-                    '__init__',
-                    [
-                        PythonFunctionArgument(
-                            'self',
-                            PythonArgumentKind.NORMAL,
-                            None,
-                            None,
-                        ),
-                        PythonFunctionArgument(
-                            'value',
-                            PythonArgumentKind.NORMAL,
-                            None,
-                            'object',
-                        ),
-                    ],
-                    'None',
-                    None,
-                    [],
-                ),
-                PythonFunctionDefinition(
-                    'value',
-                    [
-                        PythonFunctionArgument(
-                            'self',
-                            PythonArgumentKind.NORMAL,
-                            None,
-                            None,
-                        ),
-                    ],
-                    'object',
-                    None,
-                    ['property'],
-                ),
-            ],
+        (
+            ast_node('class Class: ...'),
+            PythonClassDefinition(
+                'Class',
+                [],
+                None,
+                [],
+                [],
+            ),
         ),
-    ),
-    (
-        ast_node('class Class: ...'),
-        PythonClassDefinition(
-            'Class',
-            [],
-            None,
-            [],
-            [],
+        (
+            ast_node("class Class: '''docstring'''"),
+            PythonClassDefinition(
+                'Class',
+                [],
+                PythonDocstring('docstring'),
+                [],
+                [],
+            ),
         ),
-    ),
-    (
-        ast_node('class Class: \'\'\'docstring\'\'\''),
-        PythonClassDefinition(
-            'Class',
-            [],
-            PythonDocstring('docstring'),
-            [],
-            [],
+        (
+            ast_node('class Class:\n\tdef __init__(self): ...'),
+            PythonClassDefinition(
+                'Class',
+                [],
+                None,
+                [],
+                [
+                    PythonFunctionDefinition(
+                        '__init__',
+                        [
+                            PythonFunctionArgument(
+                                'self',
+                                PythonArgumentKind.NORMAL,
+                                None,
+                                None,
+                            )
+                        ],
+                        None,
+                        None,
+                        [],
+                    ),
+                ],
+            ),
         ),
-    ),
-    (
-        ast_node('class Class:\n\tdef __init__(self): ...'),
-        PythonClassDefinition(
-            'Class',
-            [],
-            None,
-            [],
-            [
-                PythonFunctionDefinition(
-                    '__init__',
-                    [
-                        PythonFunctionArgument(
-                            'self',
-                            PythonArgumentKind.NORMAL,
-                            None,
-                            None,
-                        )
-                    ],
-                    None,
-                    None,
-                    [],
-                ),
-            ],
+        (
+            ast_node("class Class:\n\t'''doc'''\n\tdef __init__(self): ..."),
+            PythonClassDefinition(
+                'Class',
+                [],
+                PythonDocstring('doc'),
+                [],
+                [
+                    PythonFunctionDefinition(
+                        '__init__',
+                        [
+                            PythonFunctionArgument(
+                                'self',
+                                PythonArgumentKind.NORMAL,
+                                None,
+                                None,
+                            ),
+                        ],
+                        None,
+                        None,
+                        [],
+                    ),
+                ],
+            ),
         ),
-    ),
-    (
-        ast_node('class Class:\n\t\'\'\'doc\'\'\'\n\tdef __init__(self): ...'),
-        PythonClassDefinition(
-            'Class',
-            [],
-            PythonDocstring('doc'),
-            [],
-            [
-                PythonFunctionDefinition(
-                    '__init__',
-                    [
-                        PythonFunctionArgument(
-                            'self',
-                            PythonArgumentKind.NORMAL,
-                            None,
-                            None,
-                        ),
-                    ],
-                    None,
-                    None,
-                    [],
-                ),
-            ],
-        ),
-    ),
-])
+    ],
+)
 def test_PythonDefinition_from_node(node, expected):
     assert PythonClassDefinition.from_node(node) == expected
diff --git a/tests/unit/core/python/definitions/test_PythonDefinition.py b/tests/unit/core/python/definitions/test_PythonDefinition.py
index 57efca3..da947a5 100644
--- a/tests/unit/core/python/definitions/test_PythonDefinition.py
+++ b/tests/unit/core/python/definitions/test_PythonDefinition.py
@@ -17,24 +17,28 @@ from src.jcloud_docsgen.core.python.docstrings import PythonDocstring
 from src.jcloud_docsgen.exceptions import InvalidPythonIdentifierError
 import pytest
 
-@pytest.mark.parametrize('definition,expected', [
-    (
-        PythonDefinition(
-            'a',
-            None,
-            [],
+
+@pytest.mark.parametrize(
+    'definition,expected',
+    [
+        (
+            PythonDefinition(
+                'a',
+                None,
+                [],
+            ),
+            "PythonDefinition('a', None, [])",
         ),
-        'PythonDefinition(\'a\', None, [])',
-    ),
-    (
-        PythonDefinition(
-            'a',
-            PythonDocstring('Hello, World!'),
-            [],
+        (
+            PythonDefinition(
+                'a',
+                PythonDocstring('Hello, World!'),
+                [],
+            ),
+            "PythonDefinition('a', PythonDocstring('Hello, World!'), [])",
         ),
-        'PythonDefinition(\'a\', PythonDocstring(\'Hello, World!\'), [])',
-    ),
-])
+    ],
+)
 def test_PythonDefinition_string_representation(definition, expected):
     assert repr(definition) == expected
 
@@ -280,164 +284,167 @@ def test_PythonDefinition_exceptions(
     assert str(exc_info.value) == expected_exception_message
 
 
-@pytest.mark.parametrize('definition1,definition2,expected', [
-    (
-        PythonDefinition(
-            'a',
-            None,
-            [],
+@pytest.mark.parametrize(
+    'definition1,definition2,expected',
+    [
+        (
+            PythonDefinition(
+                'a',
+                None,
+                [],
+            ),
+            PythonDefinition(
+                'a',
+                None,
+                [],
+            ),
+            True,
         ),
-        PythonDefinition(
-            'a',
-            None,
-            [],
+        (
+            PythonDefinition(
+                'a',
+                PythonDocstring('doc'),
+                [],
+            ),
+            PythonDefinition(
+                'a',
+                PythonDocstring('doc'),
+                [],
+            ),
+            True,
         ),
-        True,
-    ),
-    (
-        PythonDefinition(
-            'a',
-            PythonDocstring('doc'),
-            [],
+        (
+            PythonDefinition(
+                'a',
+                PythonDocstring('doc'),
+                ['a'],
+            ),
+            PythonDefinition(
+                'a',
+                PythonDocstring('doc'),
+                ['a'],
+            ),
+            True,
         ),
-        PythonDefinition(
-            'a',
-            PythonDocstring('doc'),
-            [],
+        (
+            PythonDefinition(
+                'a',
+                PythonDocstring('doc'),
+                ['a', 'b'],
+            ),
+            PythonDefinition(
+                'a',
+                PythonDocstring('doc'),
+                ['a', 'b'],
+            ),
+            True,
         ),
-        True,
-    ),
-    (
-        PythonDefinition(
-            'a',
-            PythonDocstring('doc'),
-            ['a'],
+        (
+            PythonDefinition(
+                'a',
+                None,
+                [],
+            ),
+            PythonDefinition(
+                'b',
+                None,
+                [],
+            ),
+            False,
         ),
-        PythonDefinition(
-            'a',
-            PythonDocstring('doc'),
-            ['a'],
+        (
+            PythonDefinition(
+                'a',
+                PythonDocstring('doc'),
+                [],
+            ),
+            PythonDefinition(
+                'a',
+                None,
+                [],
+            ),
+            False,
         ),
-        True,
-    ),
-    (
-        PythonDefinition(
-            'a',
-            PythonDocstring('doc'),
-            ['a', 'b'],
+        (
+            PythonDefinition(
+                'a',
+                PythonDocstring('doc'),
+                [],
+            ),
+            PythonDefinition(
+                'a',
+                PythonDocstring('docs'),
+                [],
+            ),
+            False,
         ),
-        PythonDefinition(
-            'a',
-            PythonDocstring('doc'),
-            ['a', 'b'],
+        (
+            PythonDefinition(
+                'a',
+                None,
+                ['a'],
+            ),
+            PythonDefinition(
+                'a',
+                None,
+                ['b'],
+            ),
+            False,
         ),
-        True,
-    ),
-    (
-        PythonDefinition(
-            'a',
-            None,
-            [],
+        (
+            PythonDefinition(
+                'a',
+                None,
+                ['a'],
+            ),
+            PythonDefinition(
+                'a',
+                None,
+                [],
+            ),
+            False,
         ),
-        PythonDefinition(
-            'b',
-            None,
-            [],
+        (
+            PythonDefinition(
+                'a',
+                None,
+                ['a'],
+            ),
+            PythonDefinition(
+                'a',
+                None,
+                ['a', 'b'],
+            ),
+            False,
         ),
-        False,
-    ),
-    (
-        PythonDefinition(
-            'a',
-            PythonDocstring('doc'),
-            [],
+        (
+            PythonDefinition(
+                'a',
+                None,
+                ['b', 'a'],
+            ),
+            PythonDefinition(
+                'a',
+                None,
+                ['a', 'b'],
+            ),
+            False,
         ),
-        PythonDefinition(
-            'a',
-            None,
-            [],
+        (
+            PythonDefinition(
+                'a',
+                PythonDocstring('doc'),
+                [],
+            ),
+            PythonDefinition(
+                'b',
+                None,
+                ['a', 'b'],
+            ),
+            False,
         ),
-        False,
-    ),
-    (
-        PythonDefinition(
-            'a',
-            PythonDocstring('doc'),
-            [],
-        ),
-        PythonDefinition(
-            'a',
-            PythonDocstring('docs'),
-            [],
-        ),
-        False,
-    ),
-    (
-        PythonDefinition(
-            'a',
-            None,
-            ['a'],
-        ),
-        PythonDefinition(
-            'a',
-            None,
-            ['b'],
-        ),
-        False,
-    ),
-    (
-        PythonDefinition(
-            'a',
-            None,
-            ['a'],
-        ),
-        PythonDefinition(
-            'a',
-            None,
-            [],
-        ),
-        False,
-    ),
-    (
-        PythonDefinition(
-            'a',
-            None,
-            ['a'],
-        ),
-        PythonDefinition(
-            'a',
-            None,
-            ['a', 'b'],
-        ),
-        False,
-    ),
-    (
-        PythonDefinition(
-            'a',
-            None,
-            ['b', 'a'],
-        ),
-        PythonDefinition(
-            'a',
-            None,
-            ['a', 'b'],
-        ),
-        False,
-    ),
-    (
-        PythonDefinition(
-            'a',
-            PythonDocstring('doc'),
-            [],
-        ),
-        PythonDefinition(
-            'b',
-            None,
-            ['a', 'b'],
-        ),
-        False,
-    ),
-])
+    ],
+)
 def test_PythonDefinition___eq__(definition1, definition2, expected):
     assert (definition1 == definition2) == expected
     assert (definition2 == definition1) == expected
diff --git a/tests/unit/core/python/definitions/test_PythonFunctionDefinition.py b/tests/unit/core/python/definitions/test_PythonFunctionDefinition.py
index c119ecb..9cad10b 100644
--- a/tests/unit/core/python/definitions/test_PythonFunctionDefinition.py
+++ b/tests/unit/core/python/definitions/test_PythonFunctionDefinition.py
@@ -22,31 +22,35 @@ from src.jcloud_docsgen.exceptions import InvalidPythonIdentifierError
 from tests.utils.ast_node import ast_node
 import pytest
 
-@pytest.mark.parametrize('definition,expected', [
-    (
-        PythonFunctionDefinition(
-            'a',
-            [],
-            None,
-            None,
-            [],
-        ),
-        'PythonFunctionDefinition(\'a\', [], None, None, [])',
-    ),
-    (
-        PythonFunctionDefinition(
-            'a',
-            [],
-            None,
-            PythonDocstring('Hello, World!'),
-            [],
+
+@pytest.mark.parametrize(
+    'definition,expected',
+    [
+        (
+            PythonFunctionDefinition(
+                'a',
+                [],
+                None,
+                None,
+                [],
+            ),
+            "PythonFunctionDefinition('a', [], None, None, [])",
         ),
         (
-            'PythonFunctionDefinition(\'a\', [], None,'
-            ' PythonDocstring(\'Hello, World!\'), [])'
+            PythonFunctionDefinition(
+                'a',
+                [],
+                None,
+                PythonDocstring('Hello, World!'),
+                [],
+            ),
+            (
+                "PythonFunctionDefinition('a', [], None,"
+                " PythonDocstring('Hello, World!'), [])"
+            ),
         ),
-    ),
-])
+    ],
+)
 def test_PythonDefinition_string_representation(definition, expected):
     assert repr(definition) == expected
 
@@ -57,295 +61,296 @@ def test_PythonDefinition_string_representation(definition, expected):
         'ed_exception,expected_exception_message'
     ),
     [
-    (
-        '',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier',
-    ),
-    (
-        '.',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: .',
-    ),
-    (
-        '#',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: #',
-    ),
-    (
-        '1a',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: 1a',
-    ),
-    (
-        '1_',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: 1_',
-    ),
-    (
-        '1,',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: 1,',
-    ),
-    (
-        ',',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: ,',
-    ),
-    (
-        ':',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: :',
-    ),
-    (
-        '-',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: -',
-    ),
-    (
-        ';',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: ;',
-    ),
-    (
-        '|',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: |',
-    ),
-    (
-        '<',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: <',
-    ),
-    (
-        '>',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: >',
-    ),
-    (
-        'a,',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: a,',
-    ),
-    (
-        ',a',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: ,a',
-    ),
-    (
-        'a:',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: a:',
-    ),
-    (
-        ':a',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: :a',
-    ),
-    (
-        'a-',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: a-',
-    ),
-    (
-        '-a',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: -a',
-    ),
-    (
-        'a;',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: a;',
-    ),
-    (
-        ';a',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: ;a',
-    ),
-    (
-        'a|',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: a|',
-    ),
-    (
-        '|a',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: |a',
-    ),
-    (
-        'a<',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: a<',
-    ),
-    (
-        '<a',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: <a',
-    ),
-    (
-        'a>',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: a>',
-    ),
-    (
-        '>a',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: >a',
-    ),
-    (
-        'class',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: class',
-    ),
-    (
-        'def',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: def',
-    ),
-    (
-        'lambda',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: lambda',
-    ),
-    (
-        'None',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: None',
-    ),
-    (
-        'True',
-        [],
-        None,
-        None,
-        [],
-        InvalidPythonIdentifierError,
-        'invalid identifier: True',
-    ),
-])
+        (
+            '',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier',
+        ),
+        (
+            '.',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: .',
+        ),
+        (
+            '#',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: #',
+        ),
+        (
+            '1a',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: 1a',
+        ),
+        (
+            '1_',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: 1_',
+        ),
+        (
+            '1,',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: 1,',
+        ),
+        (
+            ',',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: ,',
+        ),
+        (
+            ':',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: :',
+        ),
+        (
+            '-',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: -',
+        ),
+        (
+            ';',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: ;',
+        ),
+        (
+            '|',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: |',
+        ),
+        (
+            '<',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: <',
+        ),
+        (
+            '>',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: >',
+        ),
+        (
+            'a,',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: a,',
+        ),
+        (
+            ',a',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: ,a',
+        ),
+        (
+            'a:',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: a:',
+        ),
+        (
+            ':a',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: :a',
+        ),
+        (
+            'a-',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: a-',
+        ),
+        (
+            '-a',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: -a',
+        ),
+        (
+            'a;',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: a;',
+        ),
+        (
+            ';a',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: ;a',
+        ),
+        (
+            'a|',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: a|',
+        ),
+        (
+            '|a',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: |a',
+        ),
+        (
+            'a<',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: a<',
+        ),
+        (
+            '<a',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: <a',
+        ),
+        (
+            'a>',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: a>',
+        ),
+        (
+            '>a',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: >a',
+        ),
+        (
+            'class',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: class',
+        ),
+        (
+            'def',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: def',
+        ),
+        (
+            'lambda',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: lambda',
+        ),
+        (
+            'None',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: None',
+        ),
+        (
+            'True',
+            [],
+            None,
+            None,
+            [],
+            InvalidPythonIdentifierError,
+            'invalid identifier: True',
+        ),
+    ],
+)
 def test_PythonFunctionDefinition_exceptions(
     name,
     args,
@@ -360,100 +365,106 @@ def test_PythonFunctionDefinition_exceptions(
     assert str(exc_info.value) == expected_exception_message
 
 
-@pytest.mark.parametrize('node,expected', [
-    (
-        ast_node('def add(a: int, b: int) -> int: return a + b'),
-        PythonFunctionDefinition(
-            'add', [
-                PythonFunctionArgument(
-                    'a',
-                    PythonArgumentKind.NORMAL,
-                    None,
-                    'int',
-                ),
-                PythonFunctionArgument(
-                    'b',
-                    PythonArgumentKind.NORMAL,
-                    None,
-                    'int',
-                ),
-            ],
-            'int',
-            None,
-            [],
-        ),
-    ),
-    (
-        ast_node('@decorator\ndef add(a: int, b: int) -> int: return a + b'),
-        PythonFunctionDefinition(
-            'add',
-            [
-                PythonFunctionArgument(
-                    'a',
-                    PythonArgumentKind.NORMAL,
-                    None,
-                    'int',
-                ),
-                PythonFunctionArgument(
-                    'b',
-                    PythonArgumentKind.NORMAL,
-                    None,
-                    'int',
-                ),
-            ],
-            'int',
-            None,
-            ['decorator'],
-        ),
-    ),
-    (
-        ast_node(
-            (
-                '@decorator1\n@decorator2\ndef add(a'
-                ': int, b: int) -> int: return a + b'
+@pytest.mark.parametrize(
+    'node,expected',
+    [
+        (
+            ast_node('def add(a: int, b: int) -> int: return a + b'),
+            PythonFunctionDefinition(
+                'add',
+                [
+                    PythonFunctionArgument(
+                        'a',
+                        PythonArgumentKind.NORMAL,
+                        None,
+                        'int',
+                    ),
+                    PythonFunctionArgument(
+                        'b',
+                        PythonArgumentKind.NORMAL,
+                        None,
+                        'int',
+                    ),
+                ],
+                'int',
+                None,
+                [],
             ),
         ),
-        PythonFunctionDefinition(
-            'add',
-            [
-                PythonFunctionArgument(
-                    'a',
-                    PythonArgumentKind.NORMAL,
-                    None,
-                    'int',
+        (
+            ast_node(
+                '@decorator\ndef add(a: int, b: int) -> int: return a + b'
+            ),
+            PythonFunctionDefinition(
+                'add',
+                [
+                    PythonFunctionArgument(
+                        'a',
+                        PythonArgumentKind.NORMAL,
+                        None,
+                        'int',
+                    ),
+                    PythonFunctionArgument(
+                        'b',
+                        PythonArgumentKind.NORMAL,
+                        None,
+                        'int',
+                    ),
+                ],
+                'int',
+                None,
+                ['decorator'],
+            ),
+        ),
+        (
+            ast_node(
+                (
+                    '@decorator1\n@decorator2\ndef add(a'
+                    ': int, b: int) -> int: return a + b'
                 ),
-                PythonFunctionArgument(
-                    'b',
-                    PythonArgumentKind.NORMAL,
-                    None,
-                    'int',
-                ),
-            ],
-            'int',
-            None,
-            ['decorator1', 'decorator2'],
+            ),
+            PythonFunctionDefinition(
+                'add',
+                [
+                    PythonFunctionArgument(
+                        'a',
+                        PythonArgumentKind.NORMAL,
+                        None,
+                        'int',
+                    ),
+                    PythonFunctionArgument(
+                        'b',
+                        PythonArgumentKind.NORMAL,
+                        None,
+                        'int',
+                    ),
+                ],
+                'int',
+                None,
+                ['decorator1', 'decorator2'],
+            ),
         ),
-    ),
-    (
-        ast_node('def func(): ...'),
-        PythonFunctionDefinition(
-            'func',
-            [],
-            None,
-            None,
-            [],
+        (
+            ast_node('def func(): ...'),
+            PythonFunctionDefinition(
+                'func',
+                [],
+                None,
+                None,
+                [],
+            ),
         ),
-    ),
-    (
-        ast_node('@decorator\ndef func(): ...'),
-        PythonFunctionDefinition(
-            'func',
-            [],
-            None,
-            None,
-            ['decorator'],
+        (
+            ast_node('@decorator\ndef func(): ...'),
+            PythonFunctionDefinition(
+                'func',
+                [],
+                None,
+                None,
+                ['decorator'],
+            ),
         ),
-    ),
-])
+    ],
+)
 def test_PythonDefinition_from_node(node, expected):
     assert PythonFunctionDefinition.from_node(node) == expected
diff --git a/tests/unit/core/python/namespaces/test_PythonModuleNamespace.py b/tests/unit/core/python/namespaces/test_PythonModuleNamespace.py
index 9525f28..612e00c 100644
--- a/tests/unit/core/python/namespaces/test_PythonModuleNamespace.py
+++ b/tests/unit/core/python/namespaces/test_PythonModuleNamespace.py
@@ -15,33 +15,49 @@
 from src.jcloud_docsgen.core.python.namespaces import PythonModuleNamespace
 import pytest
 
+
 class StrSubclass(str): ...
 
-@pytest.mark.parametrize('namespace,expected_name', [
-    (PythonModuleNamespace('a'), 'a'),
-    (PythonModuleNamespace('1'), '1'),
-    (PythonModuleNamespace(StrSubclass('a')), StrSubclass('a')),
-])
+
+@pytest.mark.parametrize(
+    'namespace,expected_name',
+    [
+        (PythonModuleNamespace('a'), 'a'),
+        (PythonModuleNamespace('1'), '1'),
+        (PythonModuleNamespace(StrSubclass('a')), StrSubclass('a')),
+    ],
+)
 def test_PythonModuleNamespace_name_attribute(namespace, expected_name):
     assert namespace.name == expected_name
 
-@pytest.mark.parametrize('namespace1,namespace2,expected', [
-    (PythonModuleNamespace('a'), PythonModuleNamespace('a'), True),
-    (PythonModuleNamespace('b'), PythonModuleNamespace('b'), True),
-    (PythonModuleNamespace('1'), PythonModuleNamespace('1'), True),
-    (PythonModuleNamespace('42'), PythonModuleNamespace('42'), True),
-    (PythonModuleNamespace('a'), PythonModuleNamespace('b'), False),
-    (PythonModuleNamespace('0'), PythonModuleNamespace('-0'), False),
-    (PythonModuleNamespace('1'), PythonModuleNamespace('a'), False),
-])
+
+@pytest.mark.parametrize(
+    'namespace1,namespace2,expected',
+    [
+        (PythonModuleNamespace('a'), PythonModuleNamespace('a'), True),
+        (PythonModuleNamespace('b'), PythonModuleNamespace('b'), True),
+        (PythonModuleNamespace('1'), PythonModuleNamespace('1'), True),
+        (PythonModuleNamespace('42'), PythonModuleNamespace('42'), True),
+        (PythonModuleNamespace('a'), PythonModuleNamespace('b'), False),
+        (PythonModuleNamespace('0'), PythonModuleNamespace('-0'), False),
+        (PythonModuleNamespace('1'), PythonModuleNamespace('a'), False),
+    ],
+)
 def test_PythonModuleNamespace___eq__(namespace1, namespace2, expected):
     assert (namespace1 == namespace2) == expected
     assert (namespace2 == namespace1) == expected
 
-@pytest.mark.parametrize('namespace,expected', [
-    (PythonModuleNamespace('a'), 'PythonModuleNamespace(\'a\')'),
-    (PythonModuleNamespace('1'), 'PythonModuleNamespace(\'1\')'),
-    (PythonModuleNamespace(StrSubclass('a')), 'PythonModuleNamespace(\'a\')'),
-])
+
+@pytest.mark.parametrize(
+    'namespace,expected',
+    [
+        (PythonModuleNamespace('a'), "PythonModuleNamespace('a')"),
+        (PythonModuleNamespace('1'), "PythonModuleNamespace('1')"),
+        (
+            PythonModuleNamespace(StrSubclass('a')),
+            "PythonModuleNamespace('a')",
+        ),
+    ],
+)
 def test_PythonModuleNamespace_string_representation(namespace, expected):
     assert repr(namespace) == expected
diff --git a/tests/unit/core/python/namespaces/test_PythonNamespace.py b/tests/unit/core/python/namespaces/test_PythonNamespace.py
index 440221b..3f845bf 100644
--- a/tests/unit/core/python/namespaces/test_PythonNamespace.py
+++ b/tests/unit/core/python/namespaces/test_PythonNamespace.py
@@ -15,20 +15,29 @@
 from src.jcloud_docsgen.core.python.namespaces import PythonNamespace
 import pytest
 
+
 class StrSubclass(str): ...
 
-@pytest.mark.parametrize('namespace,expected_name', [
-    (PythonNamespace('a'), 'a'),
-    (PythonNamespace('1'), '1'),
-    (PythonNamespace(StrSubclass('a')), StrSubclass('a')),
-])
+
+@pytest.mark.parametrize(
+    'namespace,expected_name',
+    [
+        (PythonNamespace('a'), 'a'),
+        (PythonNamespace('1'), '1'),
+        (PythonNamespace(StrSubclass('a')), StrSubclass('a')),
+    ],
+)
 def test_PythonNamespace_name_attribute(namespace, expected_name):
     assert namespace.name == expected_name
 
-@pytest.mark.parametrize('namespace,expected', [
-    (PythonNamespace('a'), 'PythonNamespace(\'a\')'),
-    (PythonNamespace('1'), 'PythonNamespace(\'1\')'),
-    (PythonNamespace(StrSubclass('a')), 'PythonNamespace(\'a\')'),
-])
+
+@pytest.mark.parametrize(
+    'namespace,expected',
+    [
+        (PythonNamespace('a'), "PythonNamespace('a')"),
+        (PythonNamespace('1'), "PythonNamespace('1')"),
+        (PythonNamespace(StrSubclass('a')), "PythonNamespace('a')"),
+    ],
+)
 def test_PythonNamespace_string_representation(namespace, expected):
     assert repr(namespace) == expected
diff --git a/tests/unit/core/python/namespaces/test_PythonPackageNamespace.py b/tests/unit/core/python/namespaces/test_PythonPackageNamespace.py
index e8a5af9..05d830e 100644
--- a/tests/unit/core/python/namespaces/test_PythonPackageNamespace.py
+++ b/tests/unit/core/python/namespaces/test_PythonPackageNamespace.py
@@ -22,38 +22,47 @@ from src.jcloud_docsgen.exceptions import (
     InvalidNamespaceError,
 )
 
+
 class StrSubclass(str): ...
 
-@pytest.mark.parametrize('namespace,expected_name', [
-    (
-        PythonPackageNamespace(
+
+@pytest.mark.parametrize(
+    'namespace,expected_name',
+    [
+        (
+            PythonPackageNamespace(
+                'a',
+                [],
+            ),
             'a',
-            [],
         ),
-        'a',
-    ),
-    (
-        PythonPackageNamespace(
+        (
+            PythonPackageNamespace(
+                '1',
+                [],
+            ),
             '1',
-            [],
         ),
-        '1',
-    ),
-    (
-        PythonPackageNamespace(
+        (
+            PythonPackageNamespace(
+                StrSubclass('a'),
+                [],
+            ),
             StrSubclass('a'),
-            [],
         ),
-        StrSubclass('a'),
-    ),
-])
+    ],
+)
 def test_PythonPackageNamespace_name_attribute(namespace, expected_name):
     assert namespace.name == expected_name
 
+
 namespace_b = PythonModuleNamespace('b')
-namespace_a = PythonPackageNamespace('a', [
-    namespace_b,
-])
+namespace_a = PythonPackageNamespace(
+    'a',
+    [
+        namespace_b,
+    ],
+)
 namespace_c = PythonModuleNamespace('c')
 namespace_k = PythonModuleNamespace('k')
 namespace_j = PythonPackageNamespace('j', [namespace_k])
@@ -64,47 +73,51 @@ namespace_f = PythonPackageNamespace('f', [namespace_g])
 namespace_e = PythonPackageNamespace('e', [namespace_f])
 namespace_d = PythonPackageNamespace('d', [namespace_e])
 
-@pytest.mark.parametrize('namespace,sub_namespaces,expected', [
-    (
-        PythonPackageNamespace(
-            'name',
-            [namespace_a, namespace_c],
+
+@pytest.mark.parametrize(
+    'namespace,sub_namespaces,expected',
+    [
+        (
+            PythonPackageNamespace(
+                'name',
+                [namespace_a, namespace_c],
+            ),
+            ['c'],
+            namespace_c,
         ),
-        ['c'],
-        namespace_c,
-    ),
-    (
-        PythonPackageNamespace(
-            'name',
-            [namespace_a, namespace_c],
+        (
+            PythonPackageNamespace(
+                'name',
+                [namespace_a, namespace_c],
+            ),
+            ['a'],
+            namespace_a,
         ),
-        ['a'],
-        namespace_a,
-    ),
-    (
-        PythonPackageNamespace(
-            'name',
-            [namespace_a, namespace_c],
+        (
+            PythonPackageNamespace(
+                'name',
+                [namespace_a, namespace_c],
+            ),
+            ['a', 'b'],
+            namespace_b,
         ),
-        ['a', 'b'],
-        namespace_b,
-    ),
-    (
-        namespace_d,
-        ['e', 'f', 'g', 'h', 'i'],
-        namespace_i,
-    ),
-    (
-        namespace_d,
-        ['e', 'f', 'g', 'h', 'i', 'j'],
-        namespace_j,
-    ),
-    (
-        namespace_d,
-        ['e', 'f', 'g', 'h', 'i', 'j', 'k'],
-        namespace_k,
-    ),
-])
+        (
+            namespace_d,
+            ['e', 'f', 'g', 'h', 'i'],
+            namespace_i,
+        ),
+        (
+            namespace_d,
+            ['e', 'f', 'g', 'h', 'i', 'j'],
+            namespace_j,
+        ),
+        (
+            namespace_d,
+            ['e', 'f', 'g', 'h', 'i', 'j', 'k'],
+            namespace_k,
+        ),
+    ],
+)
 def test_PythonPackageNamespace_namespace(
     namespace: PythonPackageNamespace,
     sub_namespaces,
@@ -112,6 +125,7 @@ def test_PythonPackageNamespace_namespace(
 ):
     assert namespace.namespace(sub_namespaces) == expected
 
+
 @pytest.mark.parametrize(
     'namespace,sub_namespaces,expected_exception,expected_exception_msg',
     [
@@ -157,129 +171,145 @@ def test_PythonPackageNamespace_namespace_exceptions(
         namespace.namespace(sub_namespaces)
     assert str(exc_info.value) == expected_exception_msg
 
-@pytest.mark.parametrize('namespace,expected', [
-    (
-        PythonPackageNamespace(
-            'a',
-            [PythonModuleNamespace('b')],
+
+@pytest.mark.parametrize(
+    'namespace,expected',
+    [
+        (
+            PythonPackageNamespace(
+                'a',
+                [PythonModuleNamespace('b')],
+            ),
+            {'b': 'b'},
         ),
-        {'b': 'b'},
-    ),
-    (
-        PythonPackageNamespace(
-            'a',
-            [
-                PythonModuleNamespace('b'),
-                PythonPackageNamespace(
-                    'c',
-                    [PythonModuleNamespace('d')],
-                ),
-            ],
+        (
+            PythonPackageNamespace(
+                'a',
+                [
+                    PythonModuleNamespace('b'),
+                    PythonPackageNamespace(
+                        'c',
+                        [PythonModuleNamespace('d')],
+                    ),
+                ],
+            ),
+            {
+                'b': 'b',
+                'c': {'d': 'd'},
+            },
         ),
-        {
-            'b': 'b',
-            'c': {'d': 'd'},
-        },
-    ),
-    (
-        PythonPackageNamespace('a', []),
-        {},
-    ),
-])
+        (
+            PythonPackageNamespace('a', []),
+            {},
+        ),
+    ],
+)
 def test_PythonPackageNamespace_sub_namespace_names(namespace, expected):
     assert namespace.sub_namespace_names() == expected
 
-@pytest.mark.parametrize('namespace1,namespace2,expected', [
-    (
-        PythonPackageNamespace(
-            'a',
-            [PythonModuleNamespace('b')],
+
+@pytest.mark.parametrize(
+    'namespace1,namespace2,expected',
+    [
+        (
+            PythonPackageNamespace(
+                'a',
+                [PythonModuleNamespace('b')],
+            ),
+            PythonPackageNamespace(
+                'a',
+                [PythonModuleNamespace('b')],
+            ),
+            True,
         ),
-        PythonPackageNamespace(
-            'a',
-            [PythonModuleNamespace('b')],
+        (
+            PythonPackageNamespace(
+                'a',
+                [
+                    PythonModuleNamespace('b'),
+                    PythonPackageNamespace(
+                        'c',
+                        [PythonModuleNamespace('d')],
+                    ),
+                ],
+            ),
+            PythonPackageNamespace(
+                'a',
+                [
+                    PythonModuleNamespace('b'),
+                    PythonPackageNamespace(
+                        'c',
+                        [PythonModuleNamespace('d')],
+                    ),
+                ],
+            ),
+            True,
         ),
-        True,
-    ),
-    (
-        PythonPackageNamespace(
-            'a',
-            [
-                PythonModuleNamespace('b'),
-                PythonPackageNamespace(
-                    'c',
-                    [PythonModuleNamespace('d')],
-                ),
-            ],
+        (
+            PythonPackageNamespace('a', []),
+            PythonPackageNamespace('a', []),
+            True,
         ),
-        PythonPackageNamespace(
-            'a',
-            [
-                PythonModuleNamespace('b'),
-                PythonPackageNamespace(
-                    'c',
-                    [PythonModuleNamespace('d')],
-                ),
-            ],
+        (
+            PythonPackageNamespace('a', []),
+            PythonPackageNamespace('b', []),
+            False,
         ),
-        True,
-    ),
-    (
-        PythonPackageNamespace('a', []),
-        PythonPackageNamespace('a', []),
-        True,
-    ),
-    (
-        PythonPackageNamespace('a', []),
-        PythonPackageNamespace('b', []),
-        False,
-    ),
-])
+    ],
+)
 def test_PythonPackageNamespace___eq__(namespace1, namespace2, expected):
     assert (namespace1 == namespace2) == expected
     assert (namespace2 == namespace1) == expected
 
-@pytest.mark.parametrize('namespace,expected', [
-    (
-        PythonPackageNamespace('a', []),
-        'PythonPackageNamespace(\'a\', [])',
-    ),
-    (
-        PythonPackageNamespace('1', []),
-        'PythonPackageNamespace(\'1\', [])',
-    ),
-    (
-        PythonPackageNamespace(StrSubclass('a'), []),
-        'PythonPackageNamespace(\'a\', [])',
-    ),
-    (
-        namespace_a,
-        'PythonPackageNamespace(\'a\', [PythonModuleNamespace(\'b\')])',
-    ),
-    (
-        namespace_d,
+
+@pytest.mark.parametrize(
+    'namespace,expected',
+    [
         (
-            'PythonPackageNamespace(\'d\', [PythonPackageNamespac'
-            'e(\'e\', [PythonPackageNamespace(\'f\', [PythonPacka'
-            'geNamespace(\'g\', [PythonPackageNamespace(\'h\', [P'
-            'ythonPackageNamespace(\'i\', [PythonPackageNamespace'
-            '(\'j\', [PythonModuleNamespace(\'k\')])])])])])])])'
+            PythonPackageNamespace('a', []),
+            "PythonPackageNamespace('a', [])",
         ),
-    ),
-])
+        (
+            PythonPackageNamespace('1', []),
+            "PythonPackageNamespace('1', [])",
+        ),
+        (
+            PythonPackageNamespace(StrSubclass('a'), []),
+            "PythonPackageNamespace('a', [])",
+        ),
+        (
+            namespace_a,
+            "PythonPackageNamespace('a', [PythonModuleNamespace('b')])",
+        ),
+        (
+            namespace_d,
+            (
+                "PythonPackageNamespace('d', [PythonPackageNamespac"
+                "e('e', [PythonPackageNamespace('f', [PythonPacka"
+                "geNamespace('g', [PythonPackageNamespace('h', [P"
+                "ythonPackageNamespace('i', [PythonPackageNamespace"
+                "('j', [PythonModuleNamespace('k')])])])])])])])"
+            ),
+        ),
+    ],
+)
 def test_PythonPackageNamespace_string_representation(namespace, expected):
     assert repr(namespace) == expected
 
-@pytest.mark.parametrize('namespace,new_namespace,expected', [
-    (
-        PythonPackageNamespace('a', []),
-        PythonModuleNamespace('b'),
-        PythonPackageNamespace(
-            'a',
-            [PythonModuleNamespace('b')],
+
+@pytest.mark.parametrize(
+    'namespace,new_namespace,expected',
+    [
+        (
+            PythonPackageNamespace('a', []),
+            PythonModuleNamespace('b'),
+            PythonPackageNamespace(
+                'a',
+                [PythonModuleNamespace('b')],
+            ),
         ),
-    ),
-])
+    ],
+)
 def test_PythonPackageNamespace___getitem__(
     namespace,
     new_namespace,
diff --git a/tests/unit/utils/test_assert_that_is_instance.py b/tests/unit/utils/test_assert_that_is_instance.py
index 54d69b2..f51009f 100644
--- a/tests/unit/utils/test_assert_that_is_instance.py
+++ b/tests/unit/utils/test_assert_that_is_instance.py
@@ -16,47 +16,58 @@ from src.jcloud_docsgen.utils import assert_that_is_instance
 import pytest
 import types
 
+
 class TestType: ...
+
+
 TestType.__name__ = 'NOT TestType'
 
-@pytest.mark.parametrize('obj,class_or_tuple', [
-    (1, int),
-    (1, (int,)),
-    (1, str | int),
-    (1, int | str | list),
-    (TestType(), TestType),
-    (None, types.NoneType),
-])
+
+@pytest.mark.parametrize(
+    'obj,class_or_tuple',
+    [
+        (1, int),
+        (1, (int,)),
+        (1, str | int),
+        (1, int | str | list),
+        (TestType(), TestType),
+        (None, types.NoneType),
+    ],
+)
 def test_assert_that_is_instance(obj, class_or_tuple):
     assert_that_is_instance(obj, class_or_tuple)
 
-@pytest.mark.parametrize('obj,class_or_tuple,expected_exception_msg', [
-    (
-        1,
-        str,
-        'expected \'str\', got \'int\'',
-    ),
-    (
-        1,
-        (str,),
-        'expected \'str\', got \'int\'',
-    ),
-    (
-        1,
-        str | float,
-        'expected either \'str\' or \'float\', got \'int\'',
-    ),
-    (
-        1,
-        str | float | list,
-        'expected either \'str\', \'float\' or \'list\', got \'int\'',
-    ),
-    (
-        1,
-        TestType,
-        'expected \'NOT TestType\', got \'int\'',
-    ),
-])
+
+@pytest.mark.parametrize(
+    'obj,class_or_tuple,expected_exception_msg',
+    [
+        (
+            1,
+            str,
+            "expected 'str', got 'int'",
+        ),
+        (
+            1,
+            (str,),
+            "expected 'str', got 'int'",
+        ),
+        (
+            1,
+            str | float,
+            "expected either 'str' or 'float', got 'int'",
+        ),
+        (
+            1,
+            str | float | list,
+            "expected either 'str', 'float' or 'list', got 'int'",
+        ),
+        (
+            1,
+            TestType,
+            "expected 'NOT TestType', got 'int'",
+        ),
+    ],
+)
 def test_assert_that_is_instance_exceptions(
     obj,
     class_or_tuple,
diff --git a/tests/unit/utils/test_get_relative_path_segments.py b/tests/unit/utils/test_get_relative_path_segments.py
index 66ba580..a418afd 100644
--- a/tests/unit/utils/test_get_relative_path_segments.py
+++ b/tests/unit/utils/test_get_relative_path_segments.py
@@ -16,61 +16,62 @@ from src.jcloud_docsgen.utils import get_relative_path_segments
 import pytest
 import pathlib
 
-@pytest.mark.parametrize('path,root,expected', [
-    (pathlib.Path('/'), pathlib.Path('/'), []),
-    (pathlib.Path('/a'), pathlib.Path('/'), ['a']),
-    (pathlib.Path('/a/'), pathlib.Path('/'), ['a']),
-    (pathlib.Path('/a'), pathlib.Path('/a'), []),
-    (pathlib.Path('/a/'), pathlib.Path('/a'), []),
-    (pathlib.Path('/a'), pathlib.Path('/a/'), []),
-    (pathlib.Path('/a/'), pathlib.Path('/a/'), []),
-    (pathlib.Path('/a/b'), pathlib.Path('/'), ['a', 'b']),
-    (pathlib.Path('/a/b/'), pathlib.Path('/'), ['a', 'b']),
-    (pathlib.Path('/a/b'), pathlib.Path('/a'), ['b']),
-    (pathlib.Path('/a/b/'), pathlib.Path('/a'), ['b']),
-    (pathlib.Path('/a/b'), pathlib.Path('/a/'), ['b']),
-    (pathlib.Path('/a/b/'), pathlib.Path('/a/'), ['b']),
-    (pathlib.Path('/a/b'), pathlib.Path('/a/b'), []),
-    (pathlib.Path('/a/b/'), pathlib.Path('/a/b'), []),
-    (pathlib.Path('/a/b'), pathlib.Path('/a/b/'), []),
-    (pathlib.Path('/a/b/'), pathlib.Path('/a/b/'), []),
 
-    (pathlib.Path('./'), pathlib.Path('./'), []),
-    (pathlib.Path('./a'), pathlib.Path('./'), ['a']),
-    (pathlib.Path('./a/'), pathlib.Path('./'), ['a']),
-    (pathlib.Path('./a'), pathlib.Path('./a'), []),
-    (pathlib.Path('./a/'), pathlib.Path('./a'), []),
-    (pathlib.Path('./a'), pathlib.Path('./a/'), []),
-    (pathlib.Path('./a/'), pathlib.Path('./a/'), []),
-    (pathlib.Path('./a/b'), pathlib.Path('./'), ['a', 'b']),
-    (pathlib.Path('./a/b/'), pathlib.Path('./'), ['a', 'b']),
-    (pathlib.Path('./a/b'), pathlib.Path('./a'), ['b']),
-    (pathlib.Path('./a/b/'), pathlib.Path('./a'), ['b']),
-    (pathlib.Path('./a/b'), pathlib.Path('./a/'), ['b']),
-    (pathlib.Path('./a/b/'), pathlib.Path('./a/'), ['b']),
-    (pathlib.Path('./a/b'), pathlib.Path('./a/b'), []),
-    (pathlib.Path('./a/b/'), pathlib.Path('./a/b'), []),
-    (pathlib.Path('./a/b'), pathlib.Path('./a/b/'), []),
-    (pathlib.Path('./a/b/'), pathlib.Path('./a/b/'), []),
-
-    (pathlib.Path(''), pathlib.Path(''), []),
-    (pathlib.Path('a'), pathlib.Path(''), ['a']),
-    (pathlib.Path('a/'), pathlib.Path(''), ['a']),
-    (pathlib.Path('a'), pathlib.Path('a'), []),
-    (pathlib.Path('a/'), pathlib.Path('a'), []),
-    (pathlib.Path('a'), pathlib.Path('a/'), []),
-    (pathlib.Path('a/'), pathlib.Path('a/'), []),
-    (pathlib.Path('a/b'), pathlib.Path(''), ['a', 'b']),
-    (pathlib.Path('a/b/'), pathlib.Path(''), ['a', 'b']),
-    (pathlib.Path('a/b'), pathlib.Path('a'), ['b']),
-    (pathlib.Path('a/b/'), pathlib.Path('a'), ['b']),
-    (pathlib.Path('a/b'), pathlib.Path('a/'), ['b']),
-    (pathlib.Path('a/b/'), pathlib.Path('a/'), ['b']),
-    (pathlib.Path('a/b'), pathlib.Path('a/b'), []),
-    (pathlib.Path('a/b/'), pathlib.Path('a/b'), []),
-    (pathlib.Path('a/b'), pathlib.Path('a/b/'), []),
-    (pathlib.Path('a/b/'), pathlib.Path('a/b/'), []),
-
-])
+@pytest.mark.parametrize(
+    'path,root,expected',
+    [
+        (pathlib.Path('/'), pathlib.Path('/'), []),
+        (pathlib.Path('/a'), pathlib.Path('/'), ['a']),
+        (pathlib.Path('/a/'), pathlib.Path('/'), ['a']),
+        (pathlib.Path('/a'), pathlib.Path('/a'), []),
+        (pathlib.Path('/a/'), pathlib.Path('/a'), []),
+        (pathlib.Path('/a'), pathlib.Path('/a/'), []),
+        (pathlib.Path('/a/'), pathlib.Path('/a/'), []),
+        (pathlib.Path('/a/b'), pathlib.Path('/'), ['a', 'b']),
+        (pathlib.Path('/a/b/'), pathlib.Path('/'), ['a', 'b']),
+        (pathlib.Path('/a/b'), pathlib.Path('/a'), ['b']),
+        (pathlib.Path('/a/b/'), pathlib.Path('/a'), ['b']),
+        (pathlib.Path('/a/b'), pathlib.Path('/a/'), ['b']),
+        (pathlib.Path('/a/b/'), pathlib.Path('/a/'), ['b']),
+        (pathlib.Path('/a/b'), pathlib.Path('/a/b'), []),
+        (pathlib.Path('/a/b/'), pathlib.Path('/a/b'), []),
+        (pathlib.Path('/a/b'), pathlib.Path('/a/b/'), []),
+        (pathlib.Path('/a/b/'), pathlib.Path('/a/b/'), []),
+        (pathlib.Path('./'), pathlib.Path('./'), []),
+        (pathlib.Path('./a'), pathlib.Path('./'), ['a']),
+        (pathlib.Path('./a/'), pathlib.Path('./'), ['a']),
+        (pathlib.Path('./a'), pathlib.Path('./a'), []),
+        (pathlib.Path('./a/'), pathlib.Path('./a'), []),
+        (pathlib.Path('./a'), pathlib.Path('./a/'), []),
+        (pathlib.Path('./a/'), pathlib.Path('./a/'), []),
+        (pathlib.Path('./a/b'), pathlib.Path('./'), ['a', 'b']),
+        (pathlib.Path('./a/b/'), pathlib.Path('./'), ['a', 'b']),
+        (pathlib.Path('./a/b'), pathlib.Path('./a'), ['b']),
+        (pathlib.Path('./a/b/'), pathlib.Path('./a'), ['b']),
+        (pathlib.Path('./a/b'), pathlib.Path('./a/'), ['b']),
+        (pathlib.Path('./a/b/'), pathlib.Path('./a/'), ['b']),
+        (pathlib.Path('./a/b'), pathlib.Path('./a/b'), []),
+        (pathlib.Path('./a/b/'), pathlib.Path('./a/b'), []),
+        (pathlib.Path('./a/b'), pathlib.Path('./a/b/'), []),
+        (pathlib.Path('./a/b/'), pathlib.Path('./a/b/'), []),
+        (pathlib.Path(''), pathlib.Path(''), []),
+        (pathlib.Path('a'), pathlib.Path(''), ['a']),
+        (pathlib.Path('a/'), pathlib.Path(''), ['a']),
+        (pathlib.Path('a'), pathlib.Path('a'), []),
+        (pathlib.Path('a/'), pathlib.Path('a'), []),
+        (pathlib.Path('a'), pathlib.Path('a/'), []),
+        (pathlib.Path('a/'), pathlib.Path('a/'), []),
+        (pathlib.Path('a/b'), pathlib.Path(''), ['a', 'b']),
+        (pathlib.Path('a/b/'), pathlib.Path(''), ['a', 'b']),
+        (pathlib.Path('a/b'), pathlib.Path('a'), ['b']),
+        (pathlib.Path('a/b/'), pathlib.Path('a'), ['b']),
+        (pathlib.Path('a/b'), pathlib.Path('a/'), ['b']),
+        (pathlib.Path('a/b/'), pathlib.Path('a/'), ['b']),
+        (pathlib.Path('a/b'), pathlib.Path('a/b'), []),
+        (pathlib.Path('a/b/'), pathlib.Path('a/b'), []),
+        (pathlib.Path('a/b'), pathlib.Path('a/b/'), []),
+        (pathlib.Path('a/b/'), pathlib.Path('a/b/'), []),
+    ],
+)
 def test_get_relative_path_segments(path, root, expected):
     assert get_relative_path_segments(path, root) == expected
diff --git a/tests/unit/utils/test_human_readable_list.py b/tests/unit/utils/test_human_readable_list.py
index e2c921b..55d1542 100644
--- a/tests/unit/utils/test_human_readable_list.py
+++ b/tests/unit/utils/test_human_readable_list.py
@@ -15,45 +15,49 @@
 from src.jcloud_docsgen.utils import human_readable_list
 import pytest
 
-@pytest.mark.parametrize('ls,final_separator,quotation_mark,expected', [
-    ([], '', '', ''),
-    ([], 'and', '', ''),
-    ([], 'and', '\'', ''),
-    ([1], '', '', '1'),
-    ([-1], '', '', '-1'),
-    ([0], '', '', '0'),
-    ([0.0], '', '', '0.0'),
-    ([-0.0], '', '', '-0.0'),
-    ([4.2], '', '', '4.2'),
-    ([-4.2], '', '', '-4.2'),
-    (['a'], '', '', 'a'),
-    ([1], 'and', '', '1'),
-    (['a'], 'and', '', 'a'),
-    ([1], 'and', '\'', '\'1\''),
-    (['a'], 'and', '\'', '\'a\''),
-    ([1, 2], 'and', '', '1 and 2'),
-    ([1, 2], 'and', '\'', '\'1\' and \'2\''),
-    ([1, 'a'], 'and', '', '1 and a'),
-    ([1, 'a'], 'and', '\'', '\'1\' and \'a\''),
-    ([1, 'a'], 'and', '', '1 and a'),
-    ([1, 'a'], 'and', '\'', '\'1\' and \'a\''),
-    ([1, 'a'], 'and', '\'', '\'1\' and \'a\''),
-    ([1, 'a'], '', '', '1  a'),
-    ([1, 'a'], '', '\'', '\'1\'  \'a\''),
-    ([1, 'a'], '', '', '1  a'),
-    ([1, 'a'], '', '\'', '\'1\'  \'a\''),
-    ([1, 'a'], '', '\'', '\'1\'  \'a\''),
-    ([1, 2, 3], 'and', '', '1, 2 and 3'),
-    ([1, 2, 3], '', '', '1, 2  3'),
-    ([1, 2, 3], 'and', '\'', '\'1\', \'2\' and \'3\''),
-    ([1, 2, 3], '', '\'', '\'1\', \'2\'  \'3\''),
-    ([1, 2, 3, 42, 'a', 23], 'and', '', '1, 2, 3, 42, a and 23'),
-    (
-        [1, 2, 3, 42, 'a', 23],
-        'and',
-        '\'',
-        '\'1\', \'2\', \'3\', \'42\', \'a\' and \'23\'',
-    ),
-])
+
+@pytest.mark.parametrize(
+    'ls,final_separator,quotation_mark,expected',
+    [
+        ([], '', '', ''),
+        ([], 'and', '', ''),
+        ([], 'and', "'", ''),
+        ([1], '', '', '1'),
+        ([-1], '', '', '-1'),
+        ([0], '', '', '0'),
+        ([0.0], '', '', '0.0'),
+        ([-0.0], '', '', '-0.0'),
+        ([4.2], '', '', '4.2'),
+        ([-4.2], '', '', '-4.2'),
+        (['a'], '', '', 'a'),
+        ([1], 'and', '', '1'),
+        (['a'], 'and', '', 'a'),
+        ([1], 'and', "'", "'1'"),
+        (['a'], 'and', "'", "'a'"),
+        ([1, 2], 'and', '', '1 and 2'),
+        ([1, 2], 'and', "'", "'1' and '2'"),
+        ([1, 'a'], 'and', '', '1 and a'),
+        ([1, 'a'], 'and', "'", "'1' and 'a'"),
+        ([1, 'a'], 'and', '', '1 and a'),
+        ([1, 'a'], 'and', "'", "'1' and 'a'"),
+        ([1, 'a'], 'and', "'", "'1' and 'a'"),
+        ([1, 'a'], '', '', '1  a'),
+        ([1, 'a'], '', "'", "'1'  'a'"),
+        ([1, 'a'], '', '', '1  a'),
+        ([1, 'a'], '', "'", "'1'  'a'"),
+        ([1, 'a'], '', "'", "'1'  'a'"),
+        ([1, 2, 3], 'and', '', '1, 2 and 3'),
+        ([1, 2, 3], '', '', '1, 2  3'),
+        ([1, 2, 3], 'and', "'", "'1', '2' and '3'"),
+        ([1, 2, 3], '', "'", "'1', '2'  '3'"),
+        ([1, 2, 3, 42, 'a', 23], 'and', '', '1, 2, 3, 42, a and 23'),
+        (
+            [1, 2, 3, 42, 'a', 23],
+            'and',
+            "'",
+            "'1', '2', '3', '42', 'a' and '23'",
+        ),
+    ],
+)
 def test_human_readable_list(ls, final_separator, quotation_mark, expected):
     assert human_readable_list(ls, final_separator, quotation_mark) == expected
diff --git a/tests/unit/utils/test_non_empty_str.py b/tests/unit/utils/test_non_empty_str.py
index 0b57d31..3f366ec 100644
--- a/tests/unit/utils/test_non_empty_str.py
+++ b/tests/unit/utils/test_non_empty_str.py
@@ -15,16 +15,20 @@
 from src.jcloud_docsgen.utils import non_empty_str
 import pytest
 
-@pytest.mark.parametrize('value,expected', [
-    (None, None),
-    ('', None),
-    (' ', None),
-    ('  ', None),
-    ('   ', None),
-    (' a ', ' a '),
-    (' a', ' a'),
-    ('a ', 'a '),
-    ('a', 'a'),
-])
+
+@pytest.mark.parametrize(
+    'value,expected',
+    [
+        (None, None),
+        ('', None),
+        (' ', None),
+        ('  ', None),
+        ('   ', None),
+        (' a ', ' a '),
+        (' a', ' a'),
+        ('a ', 'a '),
+        ('a', 'a'),
+    ],
+)
 def test_non_empty_str(value, expected):
     assert non_empty_str(value) == expected
diff --git a/tests/utils/ast_node.py b/tests/utils/ast_node.py
index 9beb441..1b164a0 100644
--- a/tests/utils/ast_node.py
+++ b/tests/utils/ast_node.py
@@ -15,12 +15,11 @@
 from typing import Union
 import ast
 
-__all__ = [
-    'ast_node'
-]
+__all__ = ['ast_node']
+
 
 def ast_node(statement: str) -> Union[ast.stmt, None]:
-    '''
+    """
     Returns an AST node from the statement.
 
     :param statement: The statement.
@@ -28,7 +27,7 @@ def ast_node(statement: str) -> Union[ast.stmt, None]:
 
     :return: The node.
     :rtype: Union[ast.stmt, None]
-    '''
+    """
 
     body = ast.parse(statement).body
     if not body: