[5.1.x] Fixed warnings per flake8 7.2.0.

https://github.com/PyCQA/flake8/releases/tag/7.2.0

Backport of 281910ff8e9ae98fa78ee5d26ae3f0b713ccf418 from main.

django/contrib/gis/db/models/fields.py

@@ -37,8 +37,6 @@ def get_srid_info(srid, connection):
     """
     from django.contrib.gis.gdal import SpatialReference
 
-    global _srid_cache
-
     try:
         # The SpatialRefSys model for the spatial backend.
         SpatialRefSys = connection.ops.spatial_ref_sys()

django/db/backends/base/base.py

@@ -220,7 +220,6 @@ class BaseDatabaseWrapper:
 
     def init_connection_state(self):
         """Initialize the database connection settings."""
-        global RAN_DB_VERSION_CHECK
         if self.alias not in RAN_DB_VERSION_CHECK:
             self.check_database_version_supported()
             RAN_DB_VERSION_CHECK.add(self.alias)

django/utils/autoreload.py

@@ -82,7 +82,6 @@ def check_errors(fn):
 
 
 def raise_last_exception():
-    global _exception
     if _exception is not None:
         raise _exception[1]
 

django/utils/translation/trans_real.py

@@ -289,7 +289,6 @@ def translation(language):
     """
     Return a translation object in the default 'django' domain.
     """
-    global _translations
     if language not in _translations:
         _translations[language] = DjangoTranslation(language)
     return _translations[language]

tests/asgi/tests.py

@@ -485,7 +485,7 @@ class ASGITest(SimpleTestCase):
 
         # A view that will listen for the cancelled error.
         async def view(request):
-            nonlocal view_started, view_did_cancel
+            nonlocal view_did_cancel
             view_started.set()
             try:
                 await asyncio.sleep(0.1)