René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Improve error message for unterminated strings with escapes","articleBody":"Inspired by #55688 and #94768.\r\n\r\nCurrently, this code raises the following error:\r\n```\r\n\u003e\u003e\u003e \"asdf\\\"\r\n  File \"\u003cstdin\u003e\", line 1\r\n    \"asdf\\\"\r\n    ^\r\nSyntaxError: unterminated string literal (detected at line 1)\r\n```\r\n\r\nMaybe there's room to make this error message more helpful, to make the source of the error more obvious for users unfamiliar with escapes. Could the following be better?\r\n```\r\n\u003e\u003e\u003e \"asdf\\\"\r\n  File \"\u003cstdin\u003e\", line 1\r\n    \"asdf\\\"\r\n    ^\r\nSyntaxError: unterminated string literal (detected at line 1); perhaps you escaped the end quote?\r\n```\r\n\r\n(The raw string situation in the linked issues that inspired this is a little extra tricky, since the workaround is still not clear. But hopefully the message still makes it clearer to users what is going on)\r\n\r\n\u003c!-- gh-linked-prs --\u003e\r\n### Linked PRs\r\n* gh-100446\r\n\u003c!-- /gh-linked-prs --\u003e\r\n","author":{"url":"https://github.com/hauntsaninja","@type":"Person","name":"hauntsaninja"},"datePublished":"2022-12-23T00:50:06.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/100445/cpython/issues/100445"}