From 644d7e85de1e90a1764da38f51d3d6d8c5e34be6 Mon Sep 17 00:00:00 2001 From: barneygale Date: Sat, 10 May 2025 15:16:23 +0100 Subject: [PATCH] GH-133789: Fix unpickling of pathlib objects pickled in Python 3.13 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+ --- Lib/pathlib/_local.py | 12 ++++++++++++ Lib/test/test_pathlib/test_pathlib.py | 6 ++++++ .../2025-05-10-15-10-54.gh-issue-133789.I-ZlUX.rst | 1 + 3 files changed, 19 insertions(+) create mode 100644 Lib/pathlib/_local.py create mode 100644 Misc/NEWS.d/next/Library/2025-05-10-15-10-54.gh-issue-133789.I-ZlUX.rst 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 8a313cc4292574..fa1e641ed42235 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. pFad - Phonifier reborn

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