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inspect: Validate that __signature__ is None or an instance of Signature.

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Closes #21801.
This commit is contained in:
Yury Selivanov 2014-06-23 10:21:04 -07:00
parent 751c7c0f2d
commit c0f964fd55
3 changed files with 13 additions and 0 deletions
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4
Lib/inspect.py
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@ -1912,6 +1912,10 @@ def _signature_internal(obj, follow_wrapper_chains=True, skip_bound_arg=True):
pass
else:
if sig is not None:
if not isinstance(sig, Signature):
raise TypeError(
'unexpected object {!r} in __signature__ '
'attribute'.format(sig))
return sig
try: