René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Remove `check_string` and `check_mapping` from `test_xml_etree`","articleBody":"Right now one test in `test_xml_etree` contains two helpers called `check_mapping` and `check_string`:\r\n\r\nhttps://github.com/python/cpython/blob/8dd2766d99f8f51ad62dc0fde8282483590c6cd0/Lib/test/test_xml_etree.py#L206-L241\r\n\r\nIt originates from very old code: https://github.com/python/cpython/blob/d9a550b5e14db2748f4fe089c2637c3462ad7d8d/Lib/test/test_xml_etree.py#L140-L169\r\n\r\nIt is half-baked with lots of obvious things to be improved.\r\n\r\nI think that it is safe just to replace them with:\r\n- `check_string` to `assertIsInstance(str)`\r\n- `check_mapping` to `assertIsInstance(dict)`\r\n\r\nIt is more correct, because both Python and C implementations only use `str` and `dict` for checked attributes. And in this case we can skip re-inventing tests for mapping and string.\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-100934\n* gh-101686\n* gh-101687\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/sobolevn","@type":"Person","name":"sobolevn"},"datePublished":"2023-01-11T09:59:32.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/100933/cpython/issues/100933"}