Use typing_extensions for Annotated imports

Author: jceipek

ninja/signature/details.py

@@ -1,14 +1,14 @@
 import inspect
 import warnings
 from collections import defaultdict, namedtuple
+from sys import version_info
 from typing import Any, Callable, Dict, Generator, List, Optional, Tuple
 
 import pydantic
 from django.http import HttpResponse
 from pydantic.fields import FieldInfo
 from pydantic_core import PydanticUndefined
 from typing_extensions import Annotated, get_args, get_origin
-from sys import version_info
 
 from ninja import UploadedFile
 from ninja.compatibility.util import UNION_TYPES

tests/main.py

@@ -1,8 +1,9 @@
-from typing import Annotated, List, Optional
+from typing import List, Optional
 from uuid import UUID
 
 import pydantic
 from django.urls import register_converter
+from typing_extensions import Annotated
 
 from ninja import Field, P, Path, PathEx, Query, Router, Schema
 

tests/test_openapi_schema.py

@@ -1,6 +1,7 @@
 import sys
-from typing import Annotated, Any, List, Union
+from typing import Any, List, Union
 from unittest.mock import Mock
+from typing_extensions import Annotated
 
 import pydantic
 import pytest