Simon Willison’s Weblog

Introducing the PyPy 1.2 release. It’s been a long time coming, but 1.2 is the first PyPy release to ship with a Just-in-Time compiler! Performance looks pretty impressive.

Posted 12th March 2010 at 11:54 pm

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OpenAI DevDay 2025 live blog - 6th October 2025
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Designing agentic loops - 30th September 2025

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