[issue6450] normpath() sometimes maps unicode to str

[Ezio Melotti]

Changes by Ezio Melotti <ezio.melotti at gmail.com>:


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components: +Unicode
nosy: +ezio.melotti
priority:  -> normal
stage:  -> test needed
versions: +Python 2.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue6450>
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