Eryk Sun <[email protected]> added the comment:
I can help, but in this case there isn't much to do. Just replace os.rename()
with os.replace(), make a minor doc change, and maybe add a test that ensures a
junction can be moved over an existing file on the same filesystem. For example:
>>> os.mkdir('temp')
>>> _winapi.CreateJunction('temp', 'src')
>>> os.lstat('src').st_reparse_tag == stat.IO_REPARSE_TAG_MOUNT_POINT
True
>>> open('dst', 'w').close()
The current implementation tries copytree() on the junction mountpoint and
fails to create a new directory named "dst":
>>> try: shutil.move('src', 'dst')
... except FileExistsError as e: e
...
FileExistsError(17, 'Cannot create a file when that file already exists')
But move() should simply replace "dst" with the junction via os.replace():
>>> os.replace('src', 'dst')
>>> os.lstat('dst').st_reparse_tag == stat.IO_REPARSE_TAG_MOUNT_POINT
True
----------
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<https://bugs.python.org/issue42929>
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