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Issue #23934: Fix inspect.signature to fail correctly for builtin types.

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Initial patch by James Powell.
This commit is contained in:
Yury Selivanov 2015-05-30 17:08:36 -04:00
parent dce09c34a0
commit bf304fcb32
3 changed files with 14 additions and 2 deletions
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6
Lib/inspect.py
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@ -2255,9 +2255,13 @@ def _signature_from_callable(obj, *,
if type not in obj.__mro__:
# We have a class (not metaclass), but no user-defined
# __init__ or __new__ for it
if obj.__init__ is object.__init__:
if (obj.__init__ is object.__init__ and
obj.__new__ is object.__new__):
# Return a signature of 'object' builtin.
return signature(object)
else:
raise ValueError(
'no signature found for builtin type {!r}'.format(obj))
elif not isinstance(obj, _NonUserDefinedCallables):
# An object with __call__