New submission from Lysandros Nikolaou <lisandros...@gmail.com>: Tuples and lists, which are invalid augmented assignment targets, currently get successfully parsed, without failing.
➜ cpython git:(targets-fix) ✗ ./python -X oldparser Python 3.9.0a6+ (heads/master-dirty:75cd8e48c6, May 14 2020, 03:01:42) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> (a, b) += (1, 2) File "<stdin>", line 1 SyntaxError: illegal expression for augmented assignment ➜ cpython git:(pr/20076) ./python Python 3.9.0a6+ (heads/pr/20076:bcf5be2772, May 14 2020, 02:15:37) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> (a, b) += 1 SystemError: invalid node type (26) for augmented assignment We also accept arbitrary targets in `except` clauses, while we should only be accepting NAME nodes: ➜ cpython git:(master) ./python Python 3.9.0a6+ (heads/master:75cd8e48c6, May 14 2020, 03:14:03) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> try: ... pass ... except Exception as a.b: ... pass ... [1] 135956 segmentation fault (core dumped) ./python ---------- assignee: lys.nikolaou components: Interpreter Core messages: 368809 nosy: gvanrossum, lys.nikolaou, pablogsal priority: normal severity: normal status: open title: PEG Parser: Invalid targets for augassign and except succeed type: behavior versions: Python 3.9 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue40618> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
