[3.14] gh-119180: Only fetch globals and locals if necessary in annotationlib.get_annotations() (GH-135644)

Lib/annotationlib.py

@@ -939,48 +939,49 @@ def get_annotations(
 ifnoteval_str:
 returndict(ann)
 
-ifisinstance(obj, type):
-# class
-obj_globals=None
-module_name=getattr(obj, "__module__", None)
-ifmodule_name:
-module=sys.modules.get(module_name, None)
-ifmodule:
-obj_globals=getattr(module, "__dict__", None)
-obj_locals=dict(vars(obj))
-unwrap=obj
-elifisinstance(obj, types.ModuleType):
-# module
-obj_globals=getattr(obj, "__dict__")
-obj_locals=None
-unwrap=None
-elifcallable(obj):
-# this includes types.Function, types.BuiltinFunctionType,
-# types.BuiltinMethodType, functools.partial, functools.singledispatch,
-# "class funclike" from Lib/test/test_inspect... on and on it goes.
-obj_globals=getattr(obj, "__globals__", None)
-obj_locals=None
-unwrap=obj
-else:
-obj_globals=obj_locals=unwrap=None
-
-ifunwrapisnotNone:
-whileTrue:
-ifhasattr(unwrap, "__wrapped__"):
-unwrap=unwrap.__wrapped__
-continue
-iffunctools:=sys.modules.get("functools"):
-ifisinstance(unwrap, functools.partial):
-unwrap=unwrap.func
+ifglobalsisNoneorlocalsisNone:
+ifisinstance(obj, type):
+# class
+obj_globals=None
+module_name=getattr(obj, "__module__", None)
+ifmodule_name:
+module=sys.modules.get(module_name, None)
+ifmodule:
+obj_globals=getattr(module, "__dict__", None)
+obj_locals=dict(vars(obj))
+unwrap=obj
+elifisinstance(obj, types.ModuleType):
+# module
+obj_globals=getattr(obj, "__dict__")
+obj_locals=None
+unwrap=None
+elifcallable(obj):
+# this includes types.Function, types.BuiltinFunctionType,
+# types.BuiltinMethodType, functools.partial, functools.singledispatch,
+# "class funclike" from Lib/test/test_inspect... on and on it goes.
+obj_globals=getattr(obj, "__globals__", None)
+obj_locals=None
+unwrap=obj
+else:
+obj_globals=obj_locals=unwrap=None
+
+ifunwrapisnotNone:
+whileTrue:
+ifhasattr(unwrap, "__wrapped__"):
+unwrap=unwrap.__wrapped__
 continue
-break
-ifhasattr(unwrap, "__globals__"):
-obj_globals=unwrap.__globals__
-
-ifglobalsisNone:
-globals=obj_globals
-iflocalsisNone:
-locals=obj_locals
+iffunctools:=sys.modules.get("functools"):
+ifisinstance(unwrap, functools.partial):
+unwrap=unwrap.func
+continue
+break
+ifhasattr(unwrap, "__globals__"):
+obj_globals=unwrap.__globals__
+
+ifglobalsisNone:
+globals=obj_globals
+iflocalsisNone:
+locals=obj_locals
 
 # "Inject" type parameters into the local namespace
 # (unless they are shadowed by assignments *in* the local namespace),

Misc/NEWS.d/next/Library/2025-06-17-22-44-19.gh-issue-119180.Ogv8Nj.rst

@@ -0,0 +1,2 @@
+Only fetch globals and locals if necessary in
+:func:`annotationlib.get_annotations`