On the subject of custom infix operators, there are at least two packages on PyPI that allow you to do this already:
https://pypi.org/project/funcoperators/ https://pypi.org/project/infix/ On Sat, May 2, 2020 at 12:51 AM Steven D'Aprano <st...@pearwood.info> wrote: > On Fri, May 01, 2020 at 07:41:57PM -0700, Andrew Barnert wrote: > > > The most obvious way to do it is borrowing straight out of Haskell, so > this: > > > > x `spam` y > > > > … compiles to exactly the same code as this: > > > > spam(x, y) > > I really, really want to like that syntax, but I can't. The backticks > get in the way. It's not that I don't like backticks. I do. But to the > degree that "infix operators" are words: > > x is y > > rather than symbols, the backticks get in the way of it looking like a > word: > > x `is` y > > Even though they're only grit on Tim's monitor *wink* nevertheless they > stand out too much for my liking. (Maybe I wouldn't think so if my > native language used more accents?) > > So I'm afraid that I can't get past the idea that for a good looking, > attractive syntax, you can either go whole-hog for Hypertalk-like > natural(-ish) language syntax: > > the number of words of line 1 of text > > or functional notation: > > len(words(lines(text)[0])) > > but cramming them into the same language with backticks or dollar signs > or some other sygil might be technically possibly but aesthetically > ugly. > > (Likewise I like Forth-like RPN code, but I don't think trying to cram > it into Python would look good.) > > > [...] > > For this particular use case: > > > > isa = isinstance > > thing `isa` Fruit and not thing `isa` Apple > > > > … honestly, the lack of any parens here makes it seem harder to read, > > even if it is a bit closer to English. > > Do you think the same about this? > > thing is None and not obj is None > > If not, perhaps its just familiarity. Or the backticks getting in the > way for you too :-) > > > -- > Steven > _______________________________________________ > 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/YMYFH3RB35CL6VXHPXS5Z3HJYJMQZHTW/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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