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Title: gh-141196: Fix threading.Semaphore documentation inconsistency by mohsinm-dev · Pull Request #141244 · python/cpython · GitHub

Open Graph Title: gh-141196: Fix threading.Semaphore documentation inconsistency by mohsinm-dev · Pull Request #141244 · python/cpython

X Title: gh-141196: Fix threading.Semaphore documentation inconsistency by mohsinm-dev · Pull Request #141244 · python/cpython

Description: Fixes issue #141196 by correcting inconsistent documentation in threading.Semaphore. The acquire() method documentation stated 'Exactly one thread will be awoken by each call to release()' which became incorrect when the n parameter was added to release() in Python 3.9. Updated acquire() docs to reflect that release(n) wakes min(j,n) threads where j = waiting threads, and clarified release() docs to specify 'up to n threads' are awakened. The fix aligns documentation with actual behavior: Semaphore.release(n) calls Condition.notify(n), which wakes exactly min(n, waiting_threads) threads. Documentation-only change, no code modifications required. Issue: gh-141196 📚 Documentation preview 📚: https://cpython-previews--141244.org.readthedocs.build/

Open Graph Description: Fixes issue #141196 by correcting inconsistent documentation in threading.Semaphore. The acquire() method documentation stated 'Exactly one thread will be awoken by each call to release()' ...

X Description: Fixes issue #141196 by correcting inconsistent documentation in threading.Semaphore. The acquire() method documentation stated 'Exactly one thread will be awoken by each call to release()&a...

Opengraph URL: https://github.com/python/cpython/pull/141244

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7ec656e gh-141196: Fix threading.Semaphore documentation inconsistency mohsinm-dev Nov 8, 2025 https://github.com/python/cpython/pull/141244/commits/7ec656e13d75b589102c78ada8ccd9b60c58b095
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