Simon Willison’s Weblog

A hands-on introduction to static code analysis. Useful tutorial on using the Python standard library tokenize and ast modules to find specific patterns in Python source code, using the visitor pattern.

Posted 5th May 2020 at 12:15 am

Recent articles

Introducing gisthost.github.io - 1st January 2026
2025: The year in LLMs - 31st December 2025
How Rob Pike got spammed with an AI slop "act of kindness" - 26th December 2025

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