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gh-103193: cache calls to inspect._shadowed_dict in inspect.getattr_static (#104267)

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Co-authored-by: Carl Meyer <carl@oddbird.net>
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Alex Waygood 2023-05-07 18:45:09 +01:00 • committed by GitHub
parent 60f588478f
commit 1b19bd1a88
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3 changed files with 32 additions and 5 deletions
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8
Lib/inspect.py
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@ -1794,8 +1794,9 @@ def _check_class(klass, attr):
return entry.__dict__[attr]
return _sentinel
def _shadowed_dict(klass):
for entry in _static_getmro(klass):
@functools.lru_cache()
def _shadowed_dict_from_mro_tuple(mro):
for entry in mro:
dunder_dict = _get_dunder_dict_of_class(entry)
if '__dict__' in dunder_dict:
class_dict = dunder_dict['__dict__']
@ -1805,6 +1806,9 @@ def _shadowed_dict(klass):
return class_dict
return _sentinel
def _shadowed_dict(klass):
return _shadowed_dict_from_mro_tuple(_static_getmro(klass))
def getattr_static(obj, attr, default=_sentinel):
"""Retrieve attributes without triggering dynamic lookup via the
descriptor protocol, __getattr__ or __getattribute__.