New submission from Vidar Fauske:
On Windows (Windows 10 in my case), given the following directory structure:
- rootfolder
- a
- b
- junc (directory junction to ../a)
a call to `shutil.rmtree('root')` will fail with an exception
`FileNotFoundError: [WinError 3]`, in a call to `os.listdir()` in
`_rmtree_unsafe`. See attached minimal working example.
Note that sorting order is important: A link in 'a' pointing to 'b' does not
fail. This is because `os.listdir()` raises an exception for 'b/junc' when its
target ('a') has already been deleted.
Also, note that this is only for junctions, not directory links (`mklink /J` vs
`mklink /D`), because:
- Directory links flag false in the `stat.S_ISDIR(os.lstat('b/junc').st_mode)`
test while junctions do not.
- `os.islink()` returns false for both junctions, while directory links do not.
Indicated Python versions are those which I have personally tested on, and
observed this behavior.
Current use case: Deleting a folder tree generated by an external tool, which
creates junction links as part of its normal operation ('lerna' tool for the
'npm' javascript package manager).
----------
components: IO, Library (Lib), Windows
files: mwe.py
messages: 300424
nosy: paul.moore, steve.dower, tim.golden, vidartf, zach.ware
priority: normal
severity: normal
status: open
title: shutil.rmtree fails when target has an internal directory junction
(Windows)
versions: Python 3.3, Python 3.6
Added file: http://bugs.python.org/file47090/mwe.py
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