[issue24254] Make class definition namespace ordered by default

[Nick Coghlan]

Nick Coghlan added the comment:

I don't think this is necessarily a blocker for beta 1 (since it can be treated as a bug fix for beta 2 if it's decided to restore the originally proposed behaviour), but it should definitely be resolved before beta 2.

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priority:  -> deferred blocker

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue24254>
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