On Sat, 2 May 2020 at 12:19, Steven D'Aprano <st...@pearwood.info> wrote: > - Is there a need for it? Granted. > - Is it complicated to get right? No.
This one, I'll query. Until someone (probably you) mentioned it, I didn't think of using zip_longest to do this - probably because I was locked into thinking about the *shortest* element, and "abort when I run out". > - Is performance critical enough that it has to be written in C? > Probably not. > - Is there agreement on the functionality? Somewhat. > - Could that need be met by your own personal toolbox? > - or a recipe in itertools? This, I think, would be a good idea. It would be discoverable (name it zip_strict), and would offer a standard, robust implementation. If (and this is a big if) it becomes sufficiently popular, a proposal to "promote" it from a recipe to an actual member of itertools would make sense. > - or by a third-party library? > - or a function in itertools? > > We've heard from people who say that they would like a strict version > of zip which raises on unequal inputs. How many of them like this enough > to add a six line function to their code? > > My personal opinion is that given that Brandt has found one concrete use > for this in the stdlib, it is probably justifiable to add it to > itertools. Whether it even needs a C accelerated version, or just a pure > Python version, I don't care, but then I'm not doing the work :-) I'm not sure the evidence warrants an itertools function yet, but that's largely something for Raymond Hettinger (as the module maintainer) to take a view on. (I'd hope Raymond would also weigh in on the PEP as it stands, too, given that it's so closely related to itertools). Paul _______________________________________________ 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/YKXTCHPFNX57KWE66P2U6MLASG2YYMLN/ Code of Conduct: http://python.org/psf/codeofconduct/
