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Methods of Python functions compare equal if the functions are equal and if __self__ is equal:
>>> class X:
... def __eq__(self, other): return True
... def meth(self): pass
>>> X().meth == X().meth
True
This is because X() == X() even though X() is not X().
For extension types, we get instead:
>>> [].append == [].append
False
This is because comparison is done with "is" instead of "==". This is a needless difference.