I completely agree. All the variations suggested are unreadable mish-mash. Set intersection exists already and it's completely clear.
On Tue, Dec 31, 2019, 12:05 PM Jonathan Crall <erote...@gmail.com> wrote: > For what its worth, I find the proposed syntax confusing and difficult to > read. Conceptually it makes sense, but using existing set operations seems > like a far more readable way to handle this case. > > On Tue, Dec 31, 2019 at 11:03 AM Richard Damon <rich...@damon-family.org> > wrote: > >> On 12/31/19 1:20 AM, iman.h.a.kha...@gmail.com wrote: >> > Hi >> > I think the following syntax's: >> > >> > if foo in foobar or bar in foobar or baz in foobar: >> > pass >> > if foo in foobar and bar in foobar and baz in foobar: >> > pass >> > >> > can be more readable and shorter if written as: >> > >> > if foo or bar or baz in foobar: >> > pass >> > if foo and bar and baz in foobar: >> > pass >> > >> > maybe for "is" instead of: >> > >> > if foobar is foo or foobar is bar or foobar is baz: >> > pass >> > >> > if foobar is foo or bar or baz: >> > pass >> > >> > now the recommended syntax translate to this: (I think so) >> > >> > if foo (IS NOT '0' or None or empty) or bar (IS NOT '0' or None or >> empty) or baz in foobar >> > >> > so probably we must introduce a new type of 'or' (I recommend the >> CAPITAL "OR","AND") so this: >> > >> > if foo OR bar OR baz in foobar: >> > pass >> > >> > translates to this: >> > >> > if foo in foobar or bar in foobar or baz in foobar: >> > pass >> >> IF I were to change the syntax ( which I don't propose), I believe the >> construct like foo or bar or baz in foobar to give you issues parsing. >> An alternative which is, in my opinion, more readable would be if >> any(foo, bar, baz) in foobar (and the alternative if all(foo, bar, baz) >> in foobar). To do this any and all could make a specially tagged tupl >> which interacts with operators like 'in' in a special way where it >> applies each of its members and or/ands the results. >> >> It may even be possible to do this with the existing Python by defining >> a suitable class any and all with an appropriate constructor and >> implementing its own version of things like in. (not sure if we can >> override 'is') >> >> -- >> Richard Damon >> _______________________________________________ >> 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/VGN4PW5LV7LMDA3ORP33BYBHJDEFMEGU/ >> Code of Conduct: http://python.org/psf/codeofconduct/ >> > > > -- > -Jon > _______________________________________________ > 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/OTKTGKG4Y7ZTZ4VCUY3VCQCJGFNFVNJP/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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