On Tue, Nov 28, 2017 at 12:44 AM, Daniel Moisset <dmois...@machinalis.com> wrote: > On 27 November 2017 at 06:40, Chris Angelico <ros...@gmail.com> wrote: >> >> Here are a few syntaxes that I believe have been proposed at various >> times: >> >> x, y = islice(iter, 2) # status quo >> x, y = iter # your proposal >> x, y, = iter # omit last destination > > > Just to clear the list, this one (trailing comma) would be > ambiguous/backward incompatible for the 1 variable case: > > x, = iter > > which is a relatively common idiom and is expected to raise an error if the > iterator has trailing elements.
Correct. For that and other reasons, I am not in favour of either of these two proposals. And the status quo is noisy and has duplicated information (you have to match the ", 2" to the number of assignment targets). I would support any syntax that (a) is currently illegal, (b) reads reasonably well, and (c) can't be TOO easily confused with something else. Assigning to Ellipsis (with or without a star) is my current preferred, but I'd happily support others that do the same job. ChrisA _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
