Fix typing_extensions==3.14.0 errors on import (#284)

Author: zmievsa

CHANGELOG.md

@@ -5,6 +5,12 @@ Please follow [the Keep a Changelog standard](https://keepachangelog.com/en/1.0.
 
 ## [Unreleased]
 
+## [5.4.1]
+
+### Fixed
+
+* Fixed import error in python 3.9 when using typing_extensions==3.14.0
+
 ## [5.4.0]
 
 ### Added

cadwyn/schema_generation.py

@@ -11,7 +11,14 @@
 from datetime import date
 from enum import Enum
 from functools import cache
-from typing import TYPE_CHECKING, Annotated, Generic, Union, cast
+from typing import (
+    TYPE_CHECKING,
+    Annotated,
+    Generic,
+    Union,
+    _BaseGenericAlias,  # pyright: ignore[reportAttributeAccessIssue]
+    cast,
+)
 
 import fastapi.params
 import fastapi.security.base
@@ -79,11 +86,6 @@
     from cadwyn.structure.versions import HeadVersion, Version, VersionBundle
 
 
-if sys.version_info >= (3, 10):
-    from typing import _BaseGenericAlias  # pyright: ignore[reportAttributeAccessIssue]
-else:
-    from typing_extensions import _BaseGenericAlias  # pyright: ignore[reportAttributeAccessIssue]
-
 _Call = TypeVar("_Call", bound=Callable[..., Any])
 
 _FieldName: TypeAlias = str
@@ -584,7 +586,7 @@ def migrate_route_to_version(self, route: fastapi.routing.APIRoute, *, ignore_re
     def _change_version_of_a_non_container_annotation(self, annotation: Any) -> Any:
         from typing_inspection.typing_objects import is_any, is_newtype, is_typealiastype
 
-        if isinstance(annotation, (_BaseGenericAlias, types.GenericAlias)):
+        if isinstance(annotation, (types.GenericAlias, _BaseGenericAlias)):
             return get_origin(annotation)[tuple(self.change_version_of_annotation(arg) for arg in get_args(annotation))]
         elif is_typealiastype(annotation):
             if (

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "cadwyn"
-version = "5.4.0"
+version = "5.4.1"
 description = "Production-ready community-driven modern Stripe-like API versioning in FastAPI"
 authors = [{ name = "Stanislav Zmiev", email = "[email protected]" }]
 license = "MIT"