Ethan Furman wrote: > On 8/24/21 3:03 PM, Tim Hoffmann via Python-ideas wrote: > > **How do you check if a container is empty?** > > IMHO the answer should not depend on the container. > I think this is the fly in the ointment -- just about everything, from len() > to bool(), to add, to iter() /all/ depend > on the container -- even equality depends on the container. `and`, `or`, and > `not` partially depend on the container > (via bool()). Only `is` is truly independent.
Sorry, I think you got me wrong: The meaning and thus implementation depends on the type (e.g. each container defines its own __len__()). However the syntax for querying length that is still uniformly `len(container)`. Likewise I'd like to have a uniform syntax for emptiness, and not different syntax for different types (`if not container` / `if len(array) == 0` / `if dataframe.empty`). _______________________________________________ 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/LRK6HHQKBH2Y4USB7DAJNOUF5NE62ZYD/ Code of Conduct: http://python.org/psf/codeofconduct/
