[issue20653] Pickle enums by name

[Ethan Furman]

Ethan Furman added the comment:

Proposal to switch to pickle by name rejected, but Enum now allows __reduce_ex__ to be overwridden in subclasses.

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priority: release blocker -> normal

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20653>
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