Simon Willison’s Weblog

The Observer Pattern in Python (via) Makes smart use of weak references.

Posted 16th June 2004 at 11:55 pm

Recent articles

Trying out the new Gemini 2.5 model family - 17th June 2025
The lethal trifecta for AI agents: private data, untrusted content, and external communication - 16th June 2025
An Introduction to Google’s Approach to AI Agent Security - 15th June 2025

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