On Fri, May 15, 2020 at 05:46:43PM +0200, Antoine Pitrou wrote: > On Fri, 15 May 2020 10:46:25 -0400 > David Mertz <me...@gnosis.cx> wrote: > > > > > 1. +1 itertools.zip_strict function > > > 2. +1 zip.strict(*args) > > > 3. +1 zip(*args, mode='strict') # mode='shortest' by default > > > 4. +0 zip(*args, strict=True) > > > > > > > Mostly I agree with Steven on relative preference: > > > > itertools.zip_strict() +1 > > zip.strict() +0.5 > > zip(mode='strict') +0 > > zip(strict=True) -0.5 > > For me: > > * zip(strict=True) +1 > * zip(mode='strict') -0 > * itertools.zip_strict() -0.5 > * zip.strict() -1 (but really, I'd like to make this -1e10)
I spent a significant amount of time and mental energy explaining in detail why a boolean flag is a poor API and is objectively the wrong interface here. This is not just a matter of personal taste: there are reasons why a flag is wrong here. Flags are for combining independent and orthogonal settings which can be combined. This is not such a feature. I think it is objectively the worst API on the table here, for reasons already discussed. - Your preferred option makes the strict zip version a second-class citizen of the language; - your preferred option is the least open to future enhancements; - your most hated option is the one which follows the Zen of Python the most closely (namely, the koan about having more namespaces); - and is the most object-oriented solution (it's effectively a method); - and most importantly you explicitly *oppose* every alternative API, giving them negative preferences; you would rather not have this zip variant at all than have an interface other than a boolean flag. If I needed this function[1], I'd accept it even if it were spelled `xyghasx.peyahc.flihaj()` and required me to set a global variable to make it work. So I can't help but interpret your total opposition to every other interface as a strong sign that you don't really need this zip variant at all. If your opinion is typical, perhaps we should just reject the PEP. Could you explain why you believe a bool flag is the only suitable interface? Objective reasons preferred please. The same goes for everyone else who gave a vote. If you have an objective reason for wanting this strict zip function to be a second class citizen that cannot be easily extended in the future, then please explain why. [1] I don't think I do. If I had my preference, thinking only of my own needs, I'd probably reject the PEP. But I acknowledge that others seem to need it. -- 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/XCKLTS2RARQAOJY6RRZB44E5EXZPTFK6/ Code of Conduct: http://python.org/psf/codeofconduct/
