Leif K-Brooks wrote: > Regardless of the various issues surrounding isinstance(), you have a > difference in functionality. Since you're just storing a reference in > the case of another LinkedList instead of copying it, mutating the > LinkedList will be different from mutating another iterable type which > has been passed to extend:
Oops, didn't think of that. Good point. > >>> linkedlist1 = LinkedList() > >>> list1 = [1, 2, 3] > >>> linkedlist2 = LinkedList([4, 5, 6]) > >>> linkedlist1.extend(list1) > >>> linkedlist1.extend(linkedlist2) > >>> linkedlist1 > LinkedList([1, 2, 3, 4, 5, 6]) > >>> list1.append(4) > >>> linkedlist1 # Notice how there's still only one 4 > LinkedList([1, 2, 3, 4, 5, 6]) > >>> linkedlist2.append(7) > >>> linkedlist1 # Notice how there's now a 7 > LinkedList([1, 2, 3, 4, 5, 6, 7]) Out of curiousity, is this code real? Where does the LinkedList() class come from? -- http://mail.python.org/mailman/listinfo/python-list
