-1. Extra complexity for no benefit. Attractive nuisance to making overly complex statement lines.
On Tue, Mar 1, 2022, 8:31 PM Svein Seldal <svei...@seldal.com> wrote: > I'm sorry for reposting, but this message got stuck in moderation > approval for 5 days so I figured I should try again. > > > I'd like to propose extending the for statement to include conditionals > akin to comprehensions in order to simplify for loop statements: > > `for .. in .. if ..:` > > E.g. > > for x in y if x in c: > some_op(x) > > which is functionally equivalent as > > for x in y: > if x not in c: > continue > some_op(x) > > > The `for .. in .. if` syntax is a well-known construct from list > comprehension syntax [1]. Other alternative ways to do this with list > comprehension is: > > for x in (a for a in y if c): > > or > > it = (a for a in y if c) > for x in it: > > Without having examined all use cases, I believe the same syntax should > be applied this syntax as for asynchronous comprehensions. > > > [1] PEP 202 - List Comprehensions > [2] PEP 530 - Asynchronous Comprehensions > > > Best regards, > Svein Seldal > _______________________________________________ > Python-ideas mailing list -- python-ideas@python.org > To unsubscribe send an email to python-ideas-le...@python.org > https://mail.python.org/mailman3/lists/python-ideas.python.org/ > Message archived at > https://mail.python.org/archives/list/python-ideas@python.org/message/7IXPROG2ANAFZTHZC4G3HRVXSKRIPXDL/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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