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reversed is not thread-safe #120608

Closed

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topic-free-threadingtype-bug

opened

on Jun 16, 2024

Bug report

Bug description:

The reversed builtin is not thread safe. The same element from a sequence can be returned multiple times.

CPython versions tested on:

CPython main branch

Operating systems tested on:

Windows

Linked PRs

eendebakpt
added
type-bugAn unexpected behavior, bug, or error
on Jun 16, 2024
Eclips4
added
topic-free-threading
on Jun 16, 2024
ambv
added a commit that references this issue on Mar 12, 2025
gh-120608: Make reversed iterator work with free-threading (#120971)
1fb7e2a
kumaraditya303
closed this as completed on Mar 13, 2025
hugovk
added a commit that references this issue on Jun 16, 2025
gh-120608: fix NEWS entry typo (#135535)
b102f09
miss-islington
added a commit that references this issue on Jun 16, 2025
pythongh-120608: fix NEWS entry typo (pythonGH-135535)
c65d408
hugovk
added a commit that references this issue on Jun 16, 2025
[3.14] gh-120608: fix NEWS entry typo (GH-135535) (#135558)
0eec8dd
lkollar
added a commit that references this issue on Jun 19, 2025
pythongh-120608: fix NEWS entry typo (python#135535)
2b5ca16
Pranjal095
added a commit that references this issue on Jul 12, 2025
pythongh-120608: fix NEWS entry typo (python#135535)
eaab760
taegyunkim
added a commit that references this issue on Aug 4, 2025
pythongh-120608: fix NEWS entry typo (python#135535)
90b29bc
Agent-Hellboy
added a commit that references this issue on Aug 19, 2025
pythongh-120608: fix NEWS entry typo (python#135535)
2f3417d
akx
added a commit that references this issue on Sep 1, 2026
pythongh-156310: Make the iter() sequence fallback iterator safe in f…
6f4e7b2

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