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Title: gh-120321: Add missing "return false" in gen_try_set_executing by colesbury · Pull Request #144291 · python/cpython · GitHub

Open Graph Title: gh-120321: Add missing "return false" in gen_try_set_executing by colesbury · Pull Request #144291 · python/cpython

X Title: gh-120321: Add missing "return false" in gen_try_set_executing by colesbury · Pull Request #144291 · python/cpython

Description: We didn't catch this because of a combination of: falling through to the if-statement below works we only specialized FOR_ITER_GEN for uniquely referenced generators, so we didn't trigger the non-thread-safe behavior. Issue: gh-120321

Open Graph Description: We didn't catch this because of a combination of: falling through to the if-statement below works we only specialized FOR_ITER_GEN for uniquely referenced generators, so we didn't trigg...

X Description: We didn't catch this because of a combination of: falling through to the if-statement below works we only specialized FOR_ITER_GEN for uniquely referenced generators, so we didn&#39...

Opengraph URL: https://github.com/python/cpython/pull/144291

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8b9bd0e gh-120321: Add missing "return false" in gen_try_set_executing colesbury Jan 27, 2026 https://github.com/python/cpython/pull/144291/commits/8b9bd0e3ea9f26001a47bbdf96e77ef074af43a4
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