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gh-70766: Mention the object getstate caveat in 3.11 What's new. #108379

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Merged
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Aug 23, 2023
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gh-70766: Mention the object getstate caveat in 3.11 What's new. #108379

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4 changes: 4 additions & 0 deletions Doc/whatsnew/3.11.rst
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Expand Up @@ -459,6 +459,10 @@ Other Language Changes
:class:`collections.OrderedDict`, :class:`collections.deque`,
:class:`weakref.WeakSet`, and :class:`datetime.tzinfo` now copies and
pickles instance attributes implemented as :term:`slots <__slots__>`.
This change has an unintended side effect: It trips up a small minority
of existing Python projects not expecting :meth:`object.__getstate__` to
exist. See the later comments on :gh:`70766` for discussions of what
workarounds such code may need.
(Contributed by Serhiy Storchaka in :issue:`26579`.)

.. _whatsnew311-pythonsafepath:
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