René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"code.co_positions behaviour does not match documentation","articleBody":"The [documentation of co_positions()](https://docs.python.org/3.12/reference/datamodel.html#codeobject.co_positions) says:\r\n\r\n`The iterator returns tuples containing the (start_line, end_line, start_column, end_column). The i-th tuple corresponds to the position of the source code that compiled to the i-th instruction.`\r\n\r\nI think this is incorrect, because the iterator returns tuples for cache entries as well:\r\n\r\n```\r\n\u003e\u003e\u003e def f():\r\n...   a.b = 1\r\n... \r\n\u003e\u003e\u003e import dis\r\n\u003e\u003e\u003e dis.dis(f)\r\n  1           0 RESUME                   0\r\n\r\n  2           2 LOAD_CONST               1 (1)\r\n              4 LOAD_GLOBAL              0 (a)\r\n             16 STORE_ATTR               1 (b)\r\n             26 LOAD_CONST               0 (None)\r\n             28 RETURN_VALUE\r\n\u003e\u003e\u003e len(list(f.__code__.co_positions()))\r\n15\r\n\u003e\u003e\u003e from pprint import pprint as pp\r\n\u003e\u003e\u003e pp(list(f.__code__.co_positions()))\r\n[(1, 1, 0, 0),\r\n (2, 2, 8, 9),\r\n (2, 2, 2, 3),\r\n (2, 2, 2, 3),\r\n (2, 2, 2, 3),\r\n (2, 2, 2, 3),\r\n (2, 2, 2, 3),\r\n (2, 2, 2, 3),\r\n (2, 2, 2, 5),\r\n (2, 2, 2, 5),\r\n (2, 2, 2, 5),\r\n (2, 2, 2, 5),\r\n (2, 2, 2, 5),\r\n (2, 2, 2, 5),\r\n (2, 2, 2, 5)]\r\n\u003e\u003e\u003e \r\n```\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-100447\n* gh-119364\n* gh-119869\n* gh-119870\n* gh-119871\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/iritkatriel","@type":"Person","name":"iritkatriel"},"datePublished":"2022-12-08T18:22:44.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/100117/cpython/issues/100117"}