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Issue 24298: Fix signature() to properly unwrap wrappers around bound methods

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This commit is contained in:
Yury Selivanov 2015-05-27 21:56:53 -04:00
parent 68fe9aa58c
commit 46c759d76d
3 changed files with 24 additions and 0 deletions
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8
Lib/inspect.py
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@ -1911,6 +1911,14 @@ def _signature_internal(obj, follow_wrapper_chains=True, skip_bound_arg=True):
# Was this function wrapped by a decorator?
if follow_wrapper_chains:
obj = unwrap(obj, stop=(lambda f: hasattr(f, "__signature__")))
if isinstance(obj, types.MethodType):
# If the unwrapped object is a *method*, we might want to
# skip its first parameter (self).
# See test_signature_wrapped_bound_method for details.
return _signature_internal(
obj,
follow_wrapper_chains=follow_wrapper_chains,
skip_bound_arg=skip_bound_arg)
try:
sig = obj.__signature__