[issue18818] Empty PYTHONIOENCODING is not the same as nonexistent

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Thank you Ezio and Vajrasky for the review.

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resolution:  -> fixed
stage: patch review -> committed/rejected
status: open -> closed
type: behavior -> enhancement
versions:  -Python 2.7, Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18818>
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