[issue16718] Mysterious atexit fail

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

It's because _Cleanup is None (as all global variables) when atexit registered functions executed. Don't use globals in such code.

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nosy: +serhiy.storchaka

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16718>
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