Python 2.4 (#1, Mar 22 2005, 21:42:42) >>> a = [1,[2,3],4] >>> a [1, [2, 3], 4] >>> a[2] 4 >>> a[1][1] 3 >>> a.append(5) >>> a[3] 5 >>> a [1, [2, 3], 4, 5]