René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Test failure in test_find_periodic_pattern in string_tests.py","articleBody":"A recent test failure:\r\n\r\n```\r\nFAIL: test_find_periodic_pattern (test.test_bytes.ByteArrayAsStringTest.test_find_periodic_pattern) (p='', text='')\r\nCover the special path for periodic patterns.\r\n----------------------------------------------------------------------\r\nTraceback (most recent call last):\r\n  File \"/home/runner/work/cpython/cpython-ro-srcdir/Lib/test/string_tests.py\", line 335, in test_find_periodic_pattern\r\n    self.checkequal(reference_find(p, text),\r\n  File \"/home/runner/work/cpython/cpython-ro-srcdir/Lib/test/string_tests.py\", line 60, in checkequal\r\n    self.assertEqual(\r\nAssertionError: -1 != 0\r\n```\r\n\r\nThe issue is `reference_find`:\r\n\r\n```\r\n        def reference_find(p, s):\r\n            for i in range(len(s)):\r\n                if s.startswith(p, i):\r\n                    return i\r\n            return -1\r\n```\r\n\r\nWhen `s == p == ''`, we get `for i in range(0)`, and then `-1` is returned instead of the actual result which should be 0.\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-105640\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/sweeneyde","@type":"Person","name":"sweeneyde"},"datePublished":"2023-06-10T22:21:22.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/105639/cpython/issues/105639"}