[issue45545] chdir __exit__ is not safe

[Barry A. Warsaw]

Barry A. Warsaw <barry at python.org> added the comment:

Does a LBYL strategy actually fix the problem?  E.g. what if the directory gets rm'd between __enter__ and __exit__?  Maybe we shouldn't try to be clever at all and just leave it to the user to decide what to do, and how to handle any chdir-back failures?  Keep it simple?

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<https://bugs.python.org/issue45545>
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