Simon Willison’s Weblog

Parse shell one-liners with pyparsing. Neat introduction to the pyparsing library, both for parsing tokens into labeled sections and constructing an AST from them.

Posted 22nd October 2017 at 1:35 pm

Recent articles

A new SQL-powered permissions system in Datasette 1.0a20 - 4th November 2025
New prompt injection papers: Agents Rule of Two and The Attacker Moves Second - 2nd November 2025
Hacking the WiFi-enabled color screen GitHub Universe conference badge - 28th October 2025

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