gh-86682: Adds sys._getframemodulename as an alternative to using _getframe (GH-99520)

Also updates calls in collections, doctest, enum, and typing modules to use _getframemodulename first when available.

1 files changed, 6 insertions, 3 deletions

diff --git a/Lib/collections/__init__.py b/Lib/collections/__init__.py
index f07ee14..b5e4d16 100644
--- a/Lib/collections/__init__.py
+++ b/Lib/collections/__init__.py
@@ -507,9 +507,12 @@ def namedtuple(typename, field_names, *, rename=False, defaults=None, module=Non
     # specified a particular module.
     if module is None:
         try:
-            module = _sys._getframe(1).f_globals.get('__name__', '__main__')
-        except (AttributeError, ValueError):
-            pass
+            module = _sys._getframemodulename(1) or '__main__'
+        except AttributeError:
+            try:
+                module = _sys._getframe(1).f_globals.get('__name__', '__main__')
+            except (AttributeError, ValueError):
+                pass
     if module is not None:
         result.__module__ = module