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

Vibe engineering - 7th October 2025
OpenAI DevDay 2025 live blog - 6th October 2025
Embracing the parallel coding agent lifestyle - 5th October 2025

compilers 16 python 1192 static-analysis 3

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe