On Tue, Mar 1, 2022 at 6:43 PM Steven D'Aprano <steve@pearwood.info> wrote:
for x in y if x in c: some_op(x)
What does this new syntax give us that we don't already have with this?
for x in y if x in c: some_op(x)
I think it's really the equivalent of for x in y: if not x in c: break do_stuff which to me give the proposed syntax a bit more relative strength. I'm probably +0 -- but I do like comprehension syntax, and have often wanted a "side effect" comprehension: $ side_effect(item) for item in an_iterable if condition(item) $ (using $ 'cause there aren't any more brackets ...) rather than having to write: for item in an_iterable: if condition(item): side_effect(item) To the point where I sometimes write the list comp and ignore the generated list. NOt too huge a burden to cretae. list of None and throw it away, but it feels wrong ;-) -CHB -- Christopher Barker, PhD (Chris) Python Language Consulting - Teaching - Scientific Software Development - Desktop GUI and Web Development - wxPython, numpy, scipy, Cython