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Update _caller() implementation #598

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Merged
merged 1 commit into from
May 24, 2025
Merged

Update _caller() implementation #598

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17 changes: 11 additions & 6 deletions src/typing_extensions.py
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Original file line number Diff line number Diff line change
Expand Up @@ -528,19 +528,24 @@ def _get_protocol_attrs(cls):
return attrs


def _caller(depth=2):
def _caller(depth=1, default='__main__'):
try:
return sys._getframe(depth).f_globals.get('__name__', '__main__')
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


# `__match_args__` attribute was removed from protocol members in 3.13,
# we want to backport this change to older Python versions.
if sys.version_info >= (3, 13):
Protocol = typing.Protocol
else:
def _allow_reckless_class_checks(depth=3):
def _allow_reckless_class_checks(depth=2):
"""Allow instance and class checks for special stdlib modules.
The abc and functools modules indiscriminately call isinstance() and
issubclass() on the whole MRO of a user class, which may contain protocols.
Expand Down Expand Up @@ -1205,7 +1210,7 @@ def _create_typeddict(
)

ns = {'__annotations__': dict(fields)}
module = _caller(depth=5 if typing_is_inline else 3)
module = _caller(depth=4 if typing_is_inline else 2)
if module is not None:
# Setting correct module is necessary to make typed dict classes
# pickleable.
Expand Down Expand Up @@ -1552,7 +1557,7 @@ def _set_default(type_param, default):

def _set_module(typevarlike):
# for pickling:
def_mod = _caller(depth=3)
def_mod = _caller(depth=2)
if def_mod != 'typing_extensions':
typevarlike.__module__ = def_mod

Expand Down
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