chore: lint source code using Ruff

src/jcloud_docsgen/core/python/namespaces.py

@@ -13,13 +13,15 @@
 # limitations under the License.
 
 from __future__ import annotations
+
+from typing import TypeAlias, Union
+
 from ...exceptions import (
     InvalidNamespaceError,
-    NamespaceNotFoundError,
     NamespaceExistsError,
+    NamespaceNotFoundError,
 )
 from ...utils import assert_that_is_instance
-from typing import Union, TypeAlias, Dict, List
 
 __all__ = [
     'PythonNamespace',
@@ -51,7 +53,7 @@ class PythonNamespace:
         return f'{type(self).__name__}({self.name!r})'
 
 
-PythonPackageNamespaceDictType: TypeAlias = Dict[
+PythonPackageNamespaceDictType: TypeAlias = dict[
     str,
     Union[
         str,
@@ -73,7 +75,7 @@ class PythonPackageNamespace(PythonNamespace):
     def __init__(
         self,
         name: str,
-        sub_namespaces: List[PythonNamespace],
+        sub_namespaces: list[PythonNamespace],
     ) -> None:
         assert_that_is_instance(sub_namespaces, list)
 
@@ -81,7 +83,7 @@ class PythonPackageNamespace(PythonNamespace):
 
         self._sub_namespaces = sub_namespaces
 
-    def namespace(self, sub_namespaces: List[str]) -> PythonNamespace:
+    def namespace(self, sub_namespaces: list[str]) -> PythonNamespace:
         """
         Returns the namespace object with a specific identifier, such as
         ``['package', 'subpackage', 'module']``.
@@ -205,7 +207,7 @@ class PythonPackageNamespace(PythonNamespace):
             self._sub_namespaces.append(namespace)
 
     @property
-    def sub_namespaces(self) -> List[PythonNamespace]:
+    def sub_namespaces(self) -> list[PythonNamespace]:
         return self._sub_namespaces