Fixed #36696 -- Fixed NameError when inspecting functions with deferred annotations.

In Python 3.14, annotations are deferred by default, so we should not
assume that the names in them have been imported unconditionally.

django/utils/inspect.py

@@ -1,10 +1,24 @@
 import functools
 import inspect
 
+from django.utils.version import PY314
+
+if PY314:
+    import annotationlib
+
 
 @functools.lru_cache(maxsize=512)
 def _get_func_parameters(func, remove_first):
-    parameters = tuple(inspect.signature(func).parameters.values())
+    # As the annotations are not used in any case, inspect the signature with
+    # FORWARDREF to leave any deferred annotations unevaluated.
+    if PY314:
+        signature = inspect.signature(
+            func, annotation_format=annotationlib.Format.FORWARDREF
+        )
+    else:
+        signature = inspect.signature(func)
+
+    parameters = tuple(signature.parameters.values())
     if remove_first:
         parameters = parameters[1:]
     return parameters

tests/utils_tests/test_inspect.py

@@ -1,8 +1,13 @@
 import subprocess
 import unittest
+from typing import TYPE_CHECKING
 
 from django.shortcuts import aget_object_or_404
 from django.utils import inspect
+from django.utils.version import PY314
+
+if TYPE_CHECKING:
+    from django.utils.safestring import SafeString
 
 
 class Person:
@@ -103,6 +108,16 @@ class TestInspectMethods(unittest.TestCase):
         self.assertIs(inspect.func_accepts_kwargs(Person.all_kinds), True)
         self.assertIs(inspect.func_accepts_kwargs(Person().just_args), False)
 
+    @unittest.skipUnless(PY314, "Deferred annotations are Python 3.14+ only")
+    def test_func_accepts_kwargs_deferred_annotations(self):
+
+        def func_with_annotations(self, name: str, complex: SafeString) -> None:
+            pass
+
+        # Inspection fails with deferred annotations with python 3.14+. Earlier
+        # Python versions trigger the NameError on module initialization.
+        self.assertIs(inspect.func_accepts_kwargs(func_with_annotations), False)
+
 
 class IsModuleLevelFunctionTestCase(unittest.TestCase):
     @classmethod