[issue7301] Add environment variable $PYTHONWARNINGS

[Barry A. Warsaw]

Barry A. Warsaw <barry at python.org> added the comment:

Patch looks good to me too.  Do any of you have commit privileges?  If so, please commit this.  If not assign the issue to me and I'll do it.

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resolution:  -> accepted

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<http://bugs.python.org/issue7301>
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