René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Confusing error message when attempting to pass a newtype as a match pattern","articleBody":"```python\r\nfrom typing import NewType\r\n\r\nT = NewType('T', str)\r\n\r\nmatch 'test':\r\n    case T(): ...\r\n```\r\n\r\nfails with:\r\n\r\n```\r\nTraceback (most recent call last):\r\n  File \"/tmp/foo.py\", line 6, in \u003cmodule\u003e\r\n    case T(): ...\r\n         ^^^\r\nTypeError: called match pattern must be a type\r\n```\r\n\r\nThe error message is confusing because `T` is a type. The error message should probably say `class` instead of `type`, since [as per the specification](https://peps.python.org/pep-0634/#class-patterns) it's a class pattern.\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-103576\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/not-my-profile","@type":"Person","name":"not-my-profile"},"datePublished":"2022-12-26T07:02:28.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/100530/cpython/issues/100530"}