[Mel Wilson]
> :) Seems to:
>
>
> Python 2.3 (#46, Jul 29 2003, 18:54:32) [MSC v.1200 32 bit (Intel)] on win32
> Type "help", "copyright", "credits" or "license" for more information.
> >>> class Eq(object):
> ... def __eq__(self, other):
> ... return True
> ...
> >>> class Neq(Eq):
> ... def __eq__(self, other):
> ... print "(according to Neq)"
> ... return False
> ...
> >>> eq,neq=Eq(),Neq()
> >>> eq==neq
> (according to Neq)
> False
> >>> neq==eq
> (according to Neq)
> False
> >>>
See the Python (language, not library) reference manual, section 3.3.8
("Coercion rules"), bullet point starting with:
Exception to the previous item: if the left operand is an
instance of a built-in type or a new-style class, and the right
operand is an instance of a proper subclass of that type or
class, ...
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