Python 3.15 is here! Here's the essential What's new in Python 3.15 guide, this year curated by 3.14 and 3.15 release manager Hugo van Kemenade. As someone who builds open source software that works in every supported Python version, I get to say goodbye to Python 3.10 and start embracing features from Python 3.11.
Hello Python 3.15, goodbye 3.10, and now I can use 3.11
About this summary. This is a short, independently written summary of an article first published by Simon Willison. Cyber Security News did not report or verify the underlying story. Read the original: https://simonwillison.net/2026/Oct/12/python-3-15/
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