https://github.com/python/cpython/commit/f59236b746b8cab8eb06a1c9fcd6c8ad9b6a93d1 commit: f59236b746b8cab8eb06a1c9fcd6c8ad9b6a93d1 branch: 3.14 author: Miss Islington (bot) <[email protected]> committer: barneygale <[email protected]> date: 2025-10-17T22:23:01Z summary:
[3.14] GH-133789: Fix unpickling of pathlib objects pickled in Python 3.13 (GH-133831) (#140276) GH-133789: Fix unpickling of pathlib objects pickled in Python 3.13 (GH-133831) In Python 3.13 (but not 3.12 or 3.14), pathlib classes are defined in `pathlib._local` rather than `pathlib`. In hindsight this was a mistake, but it was difficult to predict how the abstract/local split would pan out. In this patch we re-introduce `pathlib._local` as a stub module that re-exports the classes from `pathlib`. This allows path objects pickled in 3.13 to be unpicked in 3.14+ (cherry picked from commit f4e51f253ad6c27583438f6182c33cf368bfa45f) Co-authored-by: Barney Gale <[email protected]> files: A Lib/pathlib/_local.py A Misc/NEWS.d/next/Library/2025-05-10-15-10-54.gh-issue-133789.I-ZlUX.rst M Lib/test/test_pathlib/test_pathlib.py diff --git a/Lib/pathlib/_local.py b/Lib/pathlib/_local.py new file mode 100644 index 00000000000000..58e137f2a92d3b --- /dev/null +++ b/Lib/pathlib/_local.py @@ -0,0 +1,12 @@ +""" +This module exists so that pathlib objects pickled under Python 3.13 can be +unpickled in 3.14+. +""" + +from pathlib import * + +__all__ = [ + "UnsupportedOperation", + "PurePath", "PurePosixPath", "PureWindowsPath", + "Path", "PosixPath", "WindowsPath", +] diff --git a/Lib/test/test_pathlib/test_pathlib.py b/Lib/test/test_pathlib/test_pathlib.py index 177646724b0731..a1ea69a6b906e8 100644 --- a/Lib/test/test_pathlib/test_pathlib.py +++ b/Lib/test/test_pathlib/test_pathlib.py @@ -293,6 +293,12 @@ def test_pickling_common(self): self.assertEqual(hash(pp), hash(p)) self.assertEqual(str(pp), str(p)) + def test_unpicking_3_13(self): + data = (b"\x80\x04\x95'\x00\x00\x00\x00\x00\x00\x00\x8c\x0e" + b"pathlib._local\x94\x8c\rPurePosixPath\x94\x93\x94)R\x94.") + p = pickle.loads(data) + self.assertIsInstance(p, pathlib.PurePosixPath) + def test_repr_common(self): for pathstr in ('a', 'a/b', 'a/b/c', '/', '/a/b', '/a/b/c'): with self.subTest(pathstr=pathstr): diff --git a/Misc/NEWS.d/next/Library/2025-05-10-15-10-54.gh-issue-133789.I-ZlUX.rst b/Misc/NEWS.d/next/Library/2025-05-10-15-10-54.gh-issue-133789.I-ZlUX.rst new file mode 100644 index 00000000000000..d2a4f7f42c3b38 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2025-05-10-15-10-54.gh-issue-133789.I-ZlUX.rst @@ -0,0 +1 @@ +Fix unpickling of :mod:`pathlib` objects that were pickled in Python 3.13. _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3//lists/python-checkins.python.org Member address: [email protected]
