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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`ntpath.join()` adds slash to incomplete UNC drive with trailing slash","articleBody":"`ntpath.join()` incorrectly inserts an additional slash when joining an argument onto an incomplete UNC drive with a trailing slash:\r\n\r\n```python\r\n\u003e\u003e\u003e import ntpath\r\n\u003e\u003e\u003e ntpath.join('\\\\\\\\server\\\\share\\\\foo\\\\', 'bar')\r\n'\\\\\\\\server\\\\share\\\\foo\\\\bar'  # ok\r\n\u003e\u003e\u003e ntpath.join('\\\\\\\\server\\\\share\\\\', 'foo')\r\n'\\\\\\\\server\\\\share\\\\foo'  # ok\r\n\u003e\u003e\u003e ntpath.join('\\\\\\\\server\\\\', 'share')\r\n'\\\\\\\\server\\\\\\\\share'  # wrong!\r\n\u003e\u003e\u003e ntpath.join('\\\\\\\\', 'server')\r\n'\\\\\\\\\\\\server'  # wrong!\r\n```\r\n\r\nBefore 005e69403d638f9ff8f71e59960c600016e101a4 (3.12), the last test case succeeds because `splitdrive()` doesn't identify `'\\\\\\\\'` as a UNC drive. But the third test case is reproducible going back to 3.11 and 3.10.\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-103221\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/barneygale","@type":"Person","name":"barneygale"},"datePublished":"2023-04-03T19:34:23.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/103220/cpython/issues/103220"}