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[3.12] GH-103631: Fix PurePosixPath(PureWindowsPath(...)) separator handling (GH-104949) (GH-104991)

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For backwards compatibility, accept backslashes as path separators in
`PurePosixPath` if an instance of `PureWindowsPath` is supplied.
This restores behaviour from Python 3.11.

(cherry picked from commit 328422ce61)

Co-authored-by: Barney Gale <barney.gale@gmail.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
This commit is contained in:
Miss Islington (bot) 2023-05-26 11:42:36 -07:00 • committed by GitHub
parent eca102ddac
commit 305d78b714
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Lib/pathlib.py
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@ -300,6 +300,9 @@ class PurePath(object):
for arg in args:
if isinstance(arg, PurePath):
path = arg._raw_path
if arg._flavour is ntpath and self._flavour is posixpath:
# GH-103631: Convert separators for backwards compatibility.
path = path.replace('\\', '/')
else:
try:
path = os.fspath(arg)