From: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Date: Sun, 19 Jul 2026 15:28:20 +0000 (+0200) Subject: [3.14] gh-139806: Mention pickle error changes in What's New in 3.14 (GH-154020)... X-Git-Url: http://git.ipfire.org/index.cgi?a=commitdiff_plain;h=dfd421467feb3ffc20a34d67341bf0e768ed1f02;p=thirdparty%2FPython%2Fcpython.git [3.14] gh-139806: Mention pickle error changes in What's New in 3.14 (GH-154020) (GH-154162) The gh-122311 changes made pickle.dump() and pickle.dumps() raise PicklingError for some failures that previously raised AttributeError, ImportError, ValueError or UnicodeEncodeError, depending on the implementation. Add an entry about this in the "Porting to Python 3.14" section. (cherry picked from commit eb447081ed8182f825fa01953ec87cff41f3d585) Co-authored-by: Serhiy Storchaka Co-authored-by: Claude Fable 5 --- diff --git a/Doc/whatsnew/3.14.rst b/Doc/whatsnew/3.14.rst index 868a5275b3c4..72ef7e607928 100644 --- a/Doc/whatsnew/3.14.rst +++ b/Doc/whatsnew/3.14.rst @@ -3309,6 +3309,16 @@ Changes in the Python API This temporary change affects other threads. (Contributed by Serhiy Storchaka in :gh:`69998`.) +* :func:`pickle.dump` and :func:`pickle.dumps` now raise + :exc:`~pickle.PicklingError` for some failures that previously raised + :exc:`AttributeError`, :exc:`ImportError`, :exc:`ValueError`, + :exc:`UnicodeEncodeError` or :exc:`!PicklingError`, + depending on the implementation + (for example, pickling a local object, or an object whose module cannot be imported). + The original exception is chained to the :exc:`!PicklingError`. + Code that caught these exceptions should also catch :exc:`!PicklingError`. + (Contributed by Serhiy Storchaka in :gh:`122311`.) + * :class:`types.UnionType` is now an alias for :class:`typing.Union`, causing changes in some behaviors. See :ref:`above ` for more details.