{
  "id": 17704805,
  "title": "If in doubt, delete the uv.lock file",
  "url": "https://urgent.news/2026/11/01/if-in-doubt-delete-the-uv-lock-file",
  "topic": "culture",
  "section": "Culture",
  "published": "2026-11-01T23:24:22.000Z",
  "source": {
    "name": "Simon Willison",
    "slug": "simon-willison",
    "url": "https://simonwillison.net/2026/Nov/1/delete-uv-lock-first/"
  },
  "original_language": "en",
  "account": null,
  "summary": "I've been getting the occasional confusing Python dependency error since switching over to Python 3.15 and the rule I'm having to remember is: If in doubt, delete the uv.lock file Most of my projects are libraries which don't include a uv.lock file, since it's rude for a library dependency to lock versions for anything else that uses it. Running uv run pytest etc tends to leave uv.lock files…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}