[issue5178] Add context manager for temporary directory

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

If you look at the code for os.path.isdir, it uses other globals such as
os.stat, so you might want to reinject them in your class as well...

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nosy: +pitrou

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue5178>
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