On Mon, Nov 1, 2021 at 7:39 PM Evpok Padding <evpok.padd...@gmail.com> wrote: > > I definitely agree with that sentiment, with beginners I don't even talk > about function defaults at first, and when I do, it's when we have already > have a talk about mutables so I can just say that you almost never want a > mutable default but rather use None as a sentinel. It's not that hard and it > serves as a reminder of how mutables work, so it's actually good for teaching! >
Or you can just say "but rather use => when defining the default", and then you don't have to explain more things like whether to use "== None" or "is None" just to show how to have a default that builds a new thing. 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/PYJDIOOZSOU2N7UFTAF7BB75DZWX2UV2/ Code of Conduct: http://python.org/psf/codeofconduct/
