On Wed, Oct 13, 2021 at 7:57 PM Marc-Andre Lemburg <m...@egenix.com> wrote: > > The idea to use "-" in the context of strings may have some > merrit. Not as unary minus, but as sequence operation and > shorthand for str.removesuffix(x): > > s = 'abc' + 'def' - 'ef' + 'gh' > > giving > > s == 'abcdgh' > > Removing suffixes from strings is a rather common operation.
+1, although it's debatable whether it should be remove suffix or remove all. I'd be happy with either. > Removing prefixes is common as well, so perhaps "~" could be > mapped to str.removeprefix(): > > s = 'abcdef' ~ 'abc' > > giving > > s == 'def' Less obvious but convenient also. Unfortunately, tilde is a unary operator, so this won't actually work. > In a similar way, "/" could be mapped to str.split(), since that's > probably even more common: > > l = 'a,b,c,d' / ',' > > giving: > > l == ['a', 'b', 'c', 'd'] Definitely. In any language that supports this, I use it frequently. It should be matched with seq*str to join: ["a", "b", "c","d"] * "," to give "a,b,c,d". > Looking at the examples, I'm not sure how well this would play out > in the context of just using variables, though: > > s = a - s > s = a / c > s = a ~ p In my experience, there's often one constant and one variable involved, such as: lines = data / "\n" words = line / " " outputfile = inputfile - ".md" + ".html" > By adding such operators we could potentially make math functions > compatible with strings by the way of duck typing, giving some > really weird results, instead of errors. Maybe, but I wouldn't consider that to be a particularly high priority. If they work, great, if they don't, so be it. The math module itself is primarily focused on float math, not even int. +1. ChrisA _______________________________________________ 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/62GRB66EL4MSJPRHJMF6D5BNYFEZW3CJ/ Code of Conduct: http://python.org/psf/codeofconduct/
