[issue23518] Misplaced diagnostic caret for some SyntaxErrors
Zachary Ware added the comment: The problem is, the interpreter can't know what you meant to do, so it can only point out what it can't compile. We did recently add a special case for print without parentheses, but adding special cases for everything is just not feasible. Besides, where should the caret point in each of these cases, why, and how would you explain it to the parser? for x in the range(10): for x in range(10) the: for x in range(10) range(10): for each x in range(10): for x each in range(10): Those are just some of the possibilities for just the for statement, let alone every other statement, or even every place an expression can be used. If you can come up with a good, simple, general patch that covers every case, please do so! I'm quite sure it would be accepted. But until then, I'm afraid this isn't going to happen. -- status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23518 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23518] Misplaced diagnostic caret for some SyntaxErrors
Zack Weinberg added the comment: In terms of the formal grammar of the language, you are correct. However, the position of the caret should be chosen based *not* on the formal grammar, but on a heuristic estimation of what the most probable mistake actually is. In both of the cases I listed, the most probable mistake is as I described. Please reconsider. -- status: closed - open ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23518 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23518] Misplaced diagnostic caret for some SyntaxErrors
New submission from Zack Weinberg: I tripped over a couple of SyntaxError cases where the diagnostic caret is misplaced. While x: File stdin, line 1 While x: ^ SyntaxError: invalid syntax The caret should point to the capital W in 'While'. for x in the range(10): File stdin, line 1 for x in the range(10): ^ SyntaxError: invalid syntax The caret should point to the 'the'. -- messages: 236560 nosy: zwol priority: normal severity: normal status: open title: Misplaced diagnostic caret for some SyntaxErrors ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23518 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
