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Wed Sep 2 00:31:26 CEST 2009 · http://mail.python.org/pipermail/python-dev/2009-September/091545.html

2009/9/1 Greg Ewing <greg.ewing at canterbury.ac.nz>:
> Brett Cannon wrote:
>>
>> It isn't like it is checking
>> explicitly for a function or method, just that it can be called which
>> seems reasonable to me (unless PyCallable_Check() is as off as
>> callable() was).
>
> I think it just checks that there's something in the
> tp_call slot, which is reasonable -- if it's empty,
> there's no way that calling the object could ever
> succeed, so you might as well fail early.

It depends on whether you're keeping the "callable" object around or
not. Somebody could add a __call__ method later.

-- 
Regards,
Benjamin

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[Python-Dev] why different between staticmethod and classmethod on non-callable object?