[issue17174] Posix os.path.join should raise TypeError when passed unusable type

[Janzert]

Janzert added the comment:

While the current error message is a bit generic, I rather like that it tells you exactly why the type/object passed couldn't be used.

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nosy: +Janzert

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17174>
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