Eryk Sun <eryk...@gmail.com> added the comment:
> def test_chdir():
> with tempfile.TemporaryDirectory() as tempdir:
> old = os.getcwd()
> os.chdir(tempdir)
> with open(os.path.join(tempdir, "delme")) as fout:
> fout.write("Hello")
> os.chdir(old)
The open() call in test_chdir() fails before os.chdir(old) executes. You would
need to call os.chdir(old) in a `finally` block.
But the cleanup routine could still fail due to a sharing violation from some
other process (likely a child process) setting the directory or a child
directory as the working directory. Also, a sharing violation when trying to
delete a regular file in the tree causes the cleanup routine to fail with
NotADirectoryError because the onerror function calls rmtree() if unlink()
fails with a PermissionError.
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue42796>
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