Python wrote:
Marko Rauhamaa wrote:

id() is actually an ideal return value of __hash__(). The only criterion
is that the returned number should be different if the __eq__() is
False. That is definitely true for id()

nan is a clear, simple, undeniable counterexample to that claim.

It's a counterexample to the claim that id() *must* be different if
__eq__() is False, but that's not the claim that was made. The
claim was that it *should* be different, which allows for the
possibility that it might not be different.

(I'll put away my hairsplitting axe and go away now.)


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