On Fri, 8 Oct 2021 at 16:29, Jelle Zijlstra <jelle.zijls...@gmail.com> wrote: > That's one of the differences between the proposals discussed here. The basic > proposal Pradeep pointed out would not support named arguments, the more > complete syntax favored by Guido (and also by me; 2(a) in Pradeep's email) > would support it. > > Pradeep has done some empirical analysis that shows that in practice it is > not very common to use such types, though.
I believe resolvelib (used by pip) makes a point of always calling callbacks with named arguments, to ensure compatibility. I thought PEP 517 hooks also required callers to use keywords, but when I checked the PEP, apparently not. I think with hindsight that we should have, though. But yes, I can imagine that simpler callbacks (like key= in sort) would be more common, and would be fine with positional arguments. Paul _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-le...@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/EUXX7JBUXTNYZWKJ2XG7BXJST65DHAVI/ Code of Conduct: http://python.org/psf/codeofconduct/
