Simon Willison’s Weblog

Speeding up dateutil: Python's heapq module turns minutes into seconds. Neat case study in data structure optimisation.

Posted 22nd December 2007 at 1:07 pm

Recent articles

Large Language Models can run tools in your terminal with LLM 0.26 - 27th May 2025
Highlights from the Claude 4 system prompt - 25th May 2025
Live blog: Claude 4 launch at Code with Claude - 22nd May 2025

python 1155 data-structures 5 heapq 1 dateutil 2 brian-beck 2

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