[issue20534] Enum tests fail with pickle protocol 4
Ethan Furman
report at bugs.python.org
Sat Feb 8 14:08:43 CET 2014
Ethan Furman added the comment:
Serhiy commented:
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> Actually they don't pickle due to wrong __module__. After adding
>
> NEI.__module__ = NamedInt.__module__ = __name__
>
> PicklingError no longer raised for enum class.
If you were to look at the `_make_class_unpicklable` function you would see it works by setting __module__ to <unknown>. So, in fact, it does not pickle precisely because it has the wrong module, and your change undoes what Enum was tryng to do: if an instance cannot be pickled, don't let the class be pickled either.
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<http://bugs.python.org/issue20534>
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