[issue16817] test___all__ has to save and restore sys.modules while it does all the importing

[Eli Bendersky]

Eli Bendersky added the comment:

Yes, but pickle doesn't use this helper function. And the problem is because *pickle* tries to __import__ this module.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16817>
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