[issue4296] Python assumes identity implies equivalence; contradicts NaN

[Christian Heimes]

Christian Heimes <lists at cheimes.de> added the comment:

Oh h... Raymond, you are so right! I was too tired to think of all
implications related to the different semantic in 3.0, especially the
for in / is in invariant. I'm including Guido and Barry into the
discussion. This topic needs some attention from the gods of old. :)

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nosy: +barry, gvanrossum
priority: normal -> release blocker

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue4296>
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