[issue7367] pkgutil.walk_packages fails on write-only directory in sys.path

[Ned Deily]

Changes by Ned Deily <nad at acm.org>:


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keywords: +easy
stage:  -> needs patch
versions:  -Python 2.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue7367>
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