[pull] main from python:main#773
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pull[bot] merged 12 commits intotj-python:mainfrom Feb 18, 2026
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Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com> Co-authored-by: Victor Stinner <vstinner@python.org>
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Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
can_modify_dict() is stricter than ASSERT_DICT_LOCKED() for frozendict. It uses PyUnstable_Object_IsUniquelyReferenced() which matters for free-threaded builds. Replace anydict_setitem_take2() with setitem_take2_lock_held(). It's no longer useful to have two functions.
Copy the frozendict if needed.
tracemalloc no longer detaches the GIL to acquire its internal lock. Co-authored-by: Kumar Aditya <kumaraditya@python.org>
Ensure that APPENDS and ADDITEMS raise error for wrong collection even with empty items.
Copy also the dictionary if a dict subclass returns a frozendict.
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