On Mon, 4 Sept 2023 at 07:44, Pierre Fortin via Python-list <python-list@python.org> wrote: > > Hi, > > reversed() results are fine until iterated over, after which the > results are no longer available. This was discovered after using > something like this: > > rev = reversed( sorted( list ) ) > sr = sum( 1 for _ in rev ) > # rev is now destroyed > > So reversed() results can only be iterated once unlike sorted(), etc...
reversed() is like iter(), and should be used the same way: for item in reversed(list): If you want to eagerly construct a full reversed list, instead slice the list: list[::-1] ChrisA -- https://mail.python.org/mailman/listinfo/python-list
