style: limit line length to 79 characters

Limited the lengths of all lines to 79 characters (if possible).
Additionally, some other lines were breaked for consistence.

src/jcloud_docsgen/cli/cli.py

@@ -35,7 +35,9 @@ 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
@@ -79,7 +81,10 @@ def create_argument_parser() -> argparse.ArgumentParser:
 
     argument_parser = argparse.ArgumentParser()
 
-    subparsers = argument_parser.add_subparsers(dest = 'language', required = True)
+    subparsers = argument_parser.add_subparsers(
+        dest = 'language',
+        required = True
+    )
 
     python_parser = subparsers.add_parser(
         _LANG_PYTHON,
@@ -99,19 +104,29 @@ def create_argument_parser() -> argparse.ArgumentParser:
         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.'
+        help = (
+            'the sections to be excluded in the documentation. '
+            'If a section shall be included AND excluded, it is excluded.'
+        )
     )
     python_parser.add_argument(
         '-H',
         '--allow-html',
         action = 'store_true',
-        help = 'indicates whether HTML is allowed in the documentation. By default, HTML is disabled.'
+        help = (
+            'indicates whether HTML is allowed in the documentation. '
+            'By default, HTML is disabled.'
+        )
     )
     python_parser.add_argument(
         '-T',
         '--allow-tables',
         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.'
+        help = (
+            'indicates whether Markdown tables are allowed in the '
+            'documentation. By default, Markdown tables are disabled. '
+            'Warning: Markdown tables are not CommonMark.'
+        )
     )
 
     return argument_parser

src/jcloud_docsgen/cli/languages/python.py

@@ -13,7 +13,10 @@
 # limitations under the License.
 
 import pathlib
-from ...core.python import PythonDefinitionDocumentationIncludeSections, PythonDocumentationGenerator
+from ...core.python import (
+    PythonDefinitionDocumentationIncludeSections,
+    PythonDocumentationGenerator
+)
 from typing import Optional
 
 __all__ = [
@@ -22,9 +25,14 @@ __all__ = [
     'generate'
 ]
 
-VALID_SECTIONS = list(PythonDefinitionDocumentationIncludeSections()._args.keys())
+VALID_SECTIONS = list(
+    PythonDefinitionDocumentationIncludeSections()._args.keys()
+)
 
-def parse_sections_list(include_sections: Optional[list[str]] = None, exclude_sections: list[str] = []) -> PythonDefinitionDocumentationIncludeSections:
+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.
@@ -63,7 +71,9 @@ def _generate(
     project_directory: pathlib.Path,
     output_directory: pathlib.Path,
     *,
-    include_sections: PythonDefinitionDocumentationIncludeSections = PythonDefinitionDocumentationIncludeSections(),
+    include_sections: PythonDefinitionDocumentationIncludeSections = (
+        PythonDefinitionDocumentationIncludeSections()
+    ),
     allow_html: bool = False,
     allow_tables: bool = False
 ) -> None: