On Fri, Nov 26, 2021 at 10:11 PM Rob Cliffe via Python-list <python-list@python.org> wrote: > or, perhaps simplest, you could do > > for item in x[:-y or None]: # a value of None for a slice argument means > "don't slice here" > [do stuff] >
This is the one I'd recommend. If you're negating a slice like this, just add "or None" to handle negative zero as the other end of the list. Be aware that this will still slice even if you're going to use the whole list, unlike the "x[-y] if y else x" approach, which will iterate over the original list. That might be important. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
