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, 2 deletions

diff --git a/Lib/typing.py b/Lib/typing.py
index 8bc38f9..4675af1 100644
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -1940,10 +1940,14 @@ def _no_init_or_replace_init(self, *args, **kwargs):
 
 def _caller(depth=1, default='__main__'):
     try:
+        return sys._getframemodulename(depth + 1) or default
+    except AttributeError:  # For platforms without _getframemodulename()
+        pass
+    try:
         return sys._getframe(depth + 1).f_globals.get('__name__', default)
     except (AttributeError, ValueError):  # For platforms without _getframe()
-        return None
-
+        pass
+    return None
 
 def _allow_reckless_class_checks(depth=3):
     """Allow instance and class checks for special stdlib modules.