René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"calendar.setfirstweekday() documented parameter name does not match the implementation","articleBody":"### Documentation\n\nhttps://docs.python.org/3/library/calendar.html#calendar.setfirstweekday documents the module-level function as `setfirstweekday(weekday)`, but the implementation in `Lib/calendar.py` is `def setfirstweekday(firstweekday)`. The parameter can be passed by keyword, so the documented signature fails:\n\n```pycon\n>>> import calendar\n>>> calendar.setfirstweekday(weekday=calendar.SUNDAY)\nTraceback (most recent call last):\n  ...\nTypeError: setfirstweekday() got an unexpected keyword argument 'weekday'\n>>> calendar.setfirstweekday(firstweekday=calendar.SUNDAY)  # OK\n```\n\nThe fix is to change the documented signature to `setfirstweekday(firstweekday)`, matching the code and the already-correct `Calendar.setfirstweekday(firstweekday)` entry in the same document. I have a PR ready: #153851.\n\n\u003c!-- gh-linked-prs -->\n### Linked PRs\n* gh-153851\n* gh-153859\n* gh-153861\n* gh-153860\n\u003c!-- /gh-linked-prs -->\n","author":{"url":"https://github.com/IbrahimShaqqou","@type":"Person","name":"IbrahimShaqqou"},"datePublished":"2026-07-17T16:52:26Z","url":"https://github.com/python/cpython/issues/153853"}