On Sat, 20 Jun 2020 at 04:02, MRAB <pyt...@mrabarnett.plus.com> wrote:
> On 2020-06-20 02:22, Robert DeLanghe wrote: > > You can already do compact conditional returns with the current syntax: > > > > def foo(a, b): > > return (a != b or None) and a * b > > > > > > or even: > > > > foo = (lambda a, b: (a != b or None) and a * b) > > > > both return: > > > > > > foo(2, 5) # 10 > > foo(1, 1) # None > > > > > > ... but clarity would be better. > > > That can be written more clearly: > > def foo(a, b): > return a * b if a != b else None I find the non-compact version to be clearer: def foo(a, b): if a != b: return a*b return None > > > > > > > > On Fri, Jun 19, 2020 at 4:20 AM Serhiy Storchaka <storch...@gmail.com > > <mailto:storch...@gmail.com>> wrote: > > > > 18.06.20 15:30, Daniel. пише: > > > I love the do_stuff if cond syntax in Ruby and in perl. It's very > > > natural to real, much more to follow than if cond: do_stuff > > > > > > But still I don't think that it is enough to demand a language > > change. > > > > > > Something near this is to have a default of none for > > > > > > A if B else None > > > > > > So we can ommit the else None part, but this goes against the > > explicit > > > is better than implicit > > > > Only around 10% of "if" expressions have "else None" part. It is not > > enough to justify a new syntax (even if ignore other objections). > _______________________________________________ > 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/J7TH3N76S6C7CITCYCJWI76Y2F6DHPGF/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
_______________________________________________ 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/TG46SCE4VOG5E5QGNOAII27SDWC4EXT3/ Code of Conduct: http://python.org/psf/codeofconduct/