Yeah, we all would have liked angle brackets, but there would be problems with breaking lines between those. E.g.
def foo< T: str, S: int > (arg1: T, arg2: S) -> tuple[T, S]: ... cannot be parsed because the lexer doesn't treat angle brackets as matching pairs. In addition, we already use square brackets for *using* generics (e.g. list[int]), and most surveyed languages use the same type of brackets in declarations and uses. On Thu, Jul 14, 2022 at 1:10 PM <o.jacob.nils...@gmail.com> wrote: > Hi, I like this PEP but I couldn't find the motivation for using angle > brackets over square braces (brackets?). The survey in Appendix A is great > but lacks any conclusions. From that survey alone I would assume that angle > brackets would have been chosen over square braces, given that they are the > most common option and appear in (afaik) the more popular languages in that > list. I think the PEP should add a section about the choice of syntax in > the rejected section, which can be expanded upon in Appendix A. > > If you can't tell I'm in favor of angle brackets, I think the examples > given in the PEP look a bit messy with so many parentheses and square > braces in close proximity. Using angle brackets would make the distinction > between typevars and function parameters clearer. > _______________________________________________ > Python-Dev mailing list -- python-dev@python.org > To unsubscribe send an email to python-dev-le...@python.org > https://mail.python.org/mailman3/lists/python-dev.python.org/ > Message archived at > https://mail.python.org/archives/list/python-dev@python.org/message/2LEHJKQGRHCHGQUFXUU3DTYKKDISNPFN/ > Code of Conduct: http://python.org/psf/codeofconduct/ > -- --Guido van Rossum (python.org/~guido) *Pronouns: he/him **(why is my pronoun here?)* <http://feministing.com/2015/02/03/how-using-they-as-a-singular-pronoun-can-change-the-world/>
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