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gh-144706: docs note about combining RLock and signal handlers by robsdedude · Pull Request #144736 · python/cpython · GitHub

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gh-144706: docs note about combining RLock and signal handlers #144736

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Merged
ZeroIntensity merged 6 commits into from
Feb 12, 2026
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gh-144706: docs note about combining RLock and signal handlers #144736

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fe1db59
Docs: note about combining RLock and signal handlers
robsdedude Feb 12, 2026
57ce53f
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robsdedude Feb 12, 2026
21cc735
Move warning to signal module and rephrase
robsdedude Feb 12, 2026
3684c03
Fix typo
robsdedude Feb 12, 2026
e318c30
Wording
robsdedude Feb 12, 2026
052972a
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robsdedude Feb 12, 2026
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5 changes: 5 additions & 0 deletions Doc/library/signal.rst
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Expand Up @@ -68,6 +68,11 @@ the synchronization primitives from the :mod:`threading` module instead.

Besides, only the main thread of the main interpreter is allowed to set a new signal handler.

.. warning::

Synchronization primitives such as :class:`threading.Lock` should not be used
within signal handlers. Doing so can lead to unexpected deadlocks.


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