This is easy enough to put in your own toolkit: >>> is_empty = bool
All done! On Tue, Aug 24, 2021, 6:04 PM Tim Hoffmann via Python-ideas < python-ideas@python.org> wrote: > I also have the feeling that this is going round in circles. So let me get > back to the core question: > > **How do you check if a container is empty?** > > IMHO the answer should not depend on the container. While emptiness may > mean different things for different types. The check syntax can and should > still be uniform. > > Not a solution: > 0) The current `if not seq` syntax. "check Falsiness instead of emptiness" > is a simplification, which is not always possible. > > Possible solutions: > 1) Always use `if len(seq) == 0`. I think, this would works. But would we > want to write that in PEP-8 instead of `if not seq`? To me, this feels a > bit too low level. > 2) A protocol would formalize that concept by building respective syntax > into the language. But I concede that it may be overkill. > 3) The simple solution would be to add `is_empty()` methods to all stdlib > containers and encourage third party libs to adopt that convention as well. > That would give a uniform syntax by convention. > > Reflecting the discussion in this thread, I now favor variant 3). > > Tim > _______________________________________________ > 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/RNI2JYDY44LDV7LAGNAFT7IJD5CJT2GX/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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