Greg Couch added the comment:
In my opinion, the Python 2.7 results are wrong.
In Python 2.7, inspect.ismethod returns True for both bound and unbound methods
-- ie., is broken according to the documentation. As a workaround, I'm using:
def is_bound_method(obj):
return hasattr(obj, '__self__') and obj.__self__ is not None
is_bound_method also works for methods of classes implemented in C, e.g., int:
>>> a = 1
>>> is_bound_method(a.__add__)
True
>>> is_bound_method(int.__add__)
False
But is not very useful in that case because inspect.getargspec does not work
for functions implemented in C.
is_bound_method works unchanged in Python 3, but as noted above, in Python 3,
inspect.ismethod properly distinguishes between bound and unbound methods, so
it is not necessary.
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nosy: +gregcouch
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<http://bugs.python.org/issue16851>
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