René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"LWPCookieJar.save() gives unexpected results in 3.11.0","articleBody":"# Bug report\r\n\r\n`LWPCookieJar.save()` doesn't truncate the file.\r\nSo removing cookies from an existing jar file then saving it gives unexpected results : \r\n```python3\r\nfrom http.cookiejar import LWPCookieJar\r\nfrom urllib.request import Request, urlopen\r\n\r\nlwp = LWPCookieJar(\"cookies.lwp\")\r\n\r\n# get some cookies \u0026 save\r\nrequest = Request(\"https://www.scoopmeacookie.com/give-me-more/\")\r\nwith urlopen(request) as response:\r\n    lwp.extract_cookies(response, request)\r\n# here's some cookies\r\nprint(f\"Extracted : {lwp}\")\r\nlwp.save()\r\n\r\n# clear the jar \u0026 save\r\nlwp.clear()\r\n# the jar is now empty\r\nprint(f\"Clear     : {lwp}\")\r\nlwp.save()\r\n\r\n# are those cookies really gone ?\r\nlwp.load()\r\n# they're back ! that would be great IRL\r\n# LWPCookieJar.save() didn't truncate the file (os.O_TRUNC is missing)\r\nprint(f\"Reload    : {lwp}\")\r\n```\r\n\r\n# Environment\r\n\r\n- Python 3.11.0 (main, Oct 24 2022, 18:26:48) [MSC v.1933 64 bit (AMD64)]\r\n- Windows 10 64 bits 22H2\r\n\r\n\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-99616\n* gh-100377\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/sebdelsol","@type":"Person","name":"sebdelsol"},"datePublished":"2022-11-18T13:08:22.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/99576/cpython/issues/99576"}