Simon Willison’s Weblog

Python Logging 101. A really useful introduction to Python’s logging module by that module’s author, Vinay Sajip.

Posted 29th September 2009 at 6:40 pm

Recent articles

The Summer of Johann: prompt injections as far as the eye can see - 15th August 2025
Open weight LLMs exhibit inconsistent performance across providers - 15th August 2025
LLM 0.27, the annotated release notes: GPT-5 and improved tool calling - 11th August 2025

logging 19 python 1179 vinaysajip 1

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