René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Deprecate support of false values in urllib.parse.parse_qsl()","articleBody":"`urllib.parse.parse_qsl()` returns `[]` for any false value. There were no tests for this, so it was broken by accident in #115771 and restored in #116764.\r\n\r\nHistorically, the special case was needed to circumvent the fact that `''.split('\u0026')` returns `['']` instead of `[]`. `parse_qsl('')` and `parse_qsl(b'')` should return `[]`. But zero numbers and empty sequences (like `parse_qsl(0)` and `parse_qsl([])`) should be errors. So I propose to deprecate the current behavior for general false values and make them errors in future.\r\n\r\nThere is an open question about None. There is a code in the wild that expects `parse_qsl(None)` to work. Although it is not difficult to add workarounds for this, it may be more convenient if `None` is accepted as a valid value.\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-116903\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/serhiy-storchaka","@type":"Person","name":"serhiy-storchaka"},"datePublished":"2024-03-16T10:59:33.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/116897/cpython/issues/116897"}