On 13 April 2018 at 16:13, Guido van Rossum <gu...@python.org> wrote: > Regarding the precedence of :=, at this point the only acceptable outcome > for me is one where at the statement level, := and = can be used > interchangeably and will have the same meaning (except probably we wouldn't > allow combining both in a chained assignment). Because then we can say "and > you can use assignment in expressions too, except there you must use := > because = would be too easily confused with ==". > > Ideally this would allow all forms of = to be replaced with :=, even > extended structure unpacking (a, b, *c := foo()).
If we're going this far, why not just replace assignment statements with assignment expressions using := completely, and leave the current assignment statement for backward compatibility only (to be removed at some point following a deprecation period)? That's not rhetorical - if you're taking this position, I genuinely don't know if you see any remaining advantages to the assignment statement other than backward compatibility. Personally, I don't like the idea - but I'm not sure if that's just because I'm so used to assignment as a statement that I'm reluctant to accept change... Paul _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
