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Chase Million @millionconcepts.com · 20/05/2025

Dr. Zack Weinberg, Research Software Engineer at Million Concepts, has figured out why this happens and explained how to fix it. He described the problem and solution in a talk at #PyConUS last week. research.owlfolio.org/pubs/2025-py...

research.owlfolio.org

Writing Extension Modules to be Interruptible

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Chase Million @millionconcepts.com · 20/05/2025

The brief summary of the cause is that the interpreter fails to raise KeyboardInterrupt in a timely fashion. But there is no brief summary of the solution. It requires navigating thread safety, managing the GIL, and preventing arbitrary code execution... while not cratering performance!

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Chase Million @millionconcepts.com · 20/05/2025

We have released code that can be inserted into extension modules to fix the bug. It carries a permissive open source license. Anybody can do almost anything they want with this code --- including using it to fix this bug in their Python extensions! --- for free, forever. github.com/MillionConce...

github.com

GitHub - MillionConcepts/cpython-ext-ctrl-c: Demo of handling control-C (`KeyboardInterrupt`) smoothly in CPython C extensions

Demo of handling control-C (`KeyboardInterrupt`) smoothly in CPython C extensions - MillionConcepts/cpython-ext-ctrl-c

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