On 09.08.19 03:53, Eric V. Smith wrote: > On 8/8/2019 7:28 PM, Barry Warsaw wrote: >> On Aug 8, 2019, at 14:58, Steven D'Aprano <[email protected]> wrote: >> >>> It's not a syntax error. There's nothing wrong with the syntax per-say: >>> we still have ``target := expression``. There's a problem with the >>> *semantics* not the syntax. >> >> I’m not sure that distinction is meaningful though. What you wrote is >> disallowed, so you have to change your code (i.e. syntax) to avoid the >> error. > > I agree with Barry here. For all practical purposes, it's a syntax > error. And if we had a more powerful parser, maybe it really would be a > syntax error. See Guido's recent PEG parser articles > (https://medium.com/@gvanrossum_83706/peg-parsers-7ed72462f97c) where he > discusses raising SyntaxError after the parser is finished, in a > subsequent pass. Is it really a syntax error if pgen doesn't object to > it? In current CPython, the answer is yes.
... OT: Thanks for the interesting read! I am excited which way it will continue. -- Christian Tismer :^) [email protected] Software Consulting : http://www.stackless.com/ Karl-Liebknecht-Str. 121 : https://github.com/PySide 14482 Potsdam : GPG key -> 0xFB7BEE0E phone +49 173 24 18 776 fax +49 (30) 700143-0023 _______________________________________________ Python-Dev mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/[email protected]/message/K4Y57KYAK7B6DVKWV7R2RQJH55V7V3WF/