[issue2325] isinstance(anything, MetaclassThatDefinesInstancecheck) raises instead of returning False

2008-06-21 Thread Matias Gonzalez 

Matias Gonzalez <[EMAIL PROTECTED]> added the comment:

This is not a bug. Function __instancecheck__ should be a classmethod.

>>> class Meta(type):
... @classmethod
... def __instancecheck__(self, other):
... return False
... 
>>> isinstance(3, Meta)
False

--
nosy: +mato2000

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[issue2325] isinstance(anything, MetaclassThatDefinesInstancecheck) raises instead of returning False

2008-06-29 Thread Matias Gonzalez 

Matias Gonzalez <[EMAIL PROTECTED]> added the comment:

Yes, it should be. I don't have permissions to.

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