Simon Willison’s Weblog

Pampy: Pattern Matching for Python (via) Ingenious implementation of Erlang/Rust style pattern matching in just 150 lines of extremely cleanly designed and well-tested Python.

Posted 17th December 2018 at 7:14 am

Recent articles

Video: Building a tool to copy-paste share terminal sessions using Claude Code for web - 23rd October 2025
Dane Stuckey (OpenAI CISO) on prompt injection risks for ChatGPT Atlas - 22nd October 2025
Living dangerously with Claude - 22nd October 2025

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