On 11/2/05, Raymond Hettinger <raymond.hettinger at verizon.net> wrote:
> > Should the default equality operator compare valuesinstead of
> identities?
>
> No. Look back into last year's python-dev postings where we agreed that
> identity would always imply equality. There were a number of practical
> reasons. Also, there are a number of places in CPython where that
> assumption is implicit.
>
Perhaps you've meant something else, or I didn't understand? Identity
implying equality is true also in value-based comparison. If the
default __eq__ operator compares by value, I would say that it would
do something like:
def __eq__(self, other):
if self is other:
return True
if type(self) is not type(other):
return False
(compare the __dict__ and any __slots__, and if they are all ==,
return True.)
Noam
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