C Smith wrote: > I meant for example: > list1 = [1,2,3] > list2 = [3,4,5] > > newList = list1 + list2 > > versus > > for x in list2: > list1.append(x) > > Which is the preferred way to add elements from one list to another?
None of the above unless you need to keep the original list1. Use list1.extend(list2) # 1 or list1 += list2 # 2 I prefer (1), but both do the same under the hood: append all items from list2 or any iterable to list1. If you want to preserve the original list1 new_list = list1 + list2 is fine. _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
