René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`test_typing` fails refleak tests","articleBody":"Repro: `./python.exe -m test -R 3:3 -v test_typing`\r\n\r\nThe first test round passes, but the second one fails with:\r\n\r\n```python\r\n======================================================================\r\nFAIL: test_bytestring (test.test_typing.CollectionsAbcTests.test_bytestring)\r\n----------------------------------------------------------------------\r\nTraceback (most recent call last):\r\n  File \"/Users/sobolev/Desktop/cpython/Lib/test/test_typing.py\", line 6007, in test_bytestring\r\n    with self.assertWarns(DeprecationWarning):\r\nAssertionError: DeprecationWarning not triggered\r\n\r\n----------------------------------------------------------------------\r\nRan 576 tests in 1.479s\r\n\r\nFAILED (failures=1, skipped=1)\r\ntest test_typing failed\r\ntest_typing failed (1 failure)\r\n```\r\n\r\nI am working on a fix.\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-104416\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/sobolevn","@type":"Person","name":"sobolevn"},"datePublished":"2023-05-12T07:00:50.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/104415/cpython/issues/104415"}