On Sun, Oct 31, 2021 at 01:32:29PM +1300, Greg Ewing wrote: > On 31/10/21 5:47 am, Raymond Bisdorff wrote: > >Should the tuples comparison is in this case, I thought, not be solely > >based on the first tuple component? > > Whether you think it should or shouldn't, the fact is that it's not. > This is documented in Section 5.6 of the Library Reference: > > "tuples and lists are compared lexicographically by comparing > corresponding elements. This means that to compare equal, every element > must compare equal and the two sequences must be of the same type and > have the same length."
I don't think that applies if you provide a key function. In context, Raymond is referring to using itemgetter(0) as the key function, so only the first item in the tuple will be considered. -- Steve _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-le...@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/NOTXDVEMIAE5YKREK274QEPJGX6OA7JO/ Code of Conduct: http://python.org/psf/codeofconduct/
