[issue12420] distutils tests fail if PATH is not defined

[Terry J. Reedy]

Changes by Terry J. Reedy <tjreedy at udel.edu>:


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versions: +Python 3.5 -Python 3.3
Added file: http://bugs.python.org/file35798/distutils-12420.diff

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12420>
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