Both '%' and .format() support both positional and named arguments. There are probably a few use cases for .format() (vs. f-strings) but overall I don't believe there is much reasons left to prefer %.
Note that the existence, and popularity, of tools like flynt and pyupgrade (that convert % and .format() directives to f-strings automatically) supports this affirmation. I found the 'un-fstring' project on pypi that does the reverse, but it's use case, as advertised in the README, is clear: "Sometimes, unfortunately, you need to write code that is compatible with Python 3.5"... S. On Tue, Feb 23, 2021 at 6:50 PM Chris Angelico <ros...@gmail.com> wrote: > On Wed, Feb 24, 2021 at 4:13 AM Richard Damon <rich...@damon-family.org> > wrote: > > As far as between % or .format(), I think the documentation is fairly > > clear that the % method is 'old' and if not 'formally' deprecated, is no > > longer considered the 'obvious' way to do it (even if some people will > > still do it that way for the simplest cases). > > Not really - both forms have their places. You use .format() when you > need to be able to reorder arguments, you use percent formatting when > you want a compact and simple notation. It's like how we have both > string methods and regular expressions - neither one deprecates the > other. > > 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/UEZIQ56UYPDWQE3UU5BP72ADRKM2ZSNB/ > Code of Conduct: http://python.org/psf/codeofconduct/ > -- Stefane Fermigier - http://fermigier.com/ - http://twitter.com/sfermigier - http://linkedin.com/in/sfermigier Founder & CEO, Abilian - Enterprise Social Software - http://www.abilian.com/ Chairman, National Council for Free & Open Source Software (CNLL) - http://cnll.fr/ Founder & Organiser, PyParis & PyData Paris - http://pyparis.org/ & http://pydata.fr/
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