On Thu, Nov 30, 2017 at 10:49:19AM +1300, Greg Ewing wrote: > C Anthony Risinger wrote: > >Is __len__ a viable option now that __length_hint__ has been identified > >for hints? > > No, I misremembered that feature, sorry. > > But I still don't like the idea of changing behaviour > depending on whether the RHS "looks like" an iterator > or not.
The reason I oppose that is that in all other ways related to iteration, iterators are a perfect substitute for any other iterable: for x in iterable: pass list(iterable) function(*iterable) a, *b, c = iterable a, *b = iterable all behave identically whether iterable is a list or an iterator. This would make the last example, and only that, behave differently depending on whether you pass an iterator or some other iterable. -- Steve _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
