Working with Lists >>dig1ts=[1,8,2,8] >>dig1ts=[2//2,2+2+2+2,2,2*2*2] The number of elements >>len(digits) 4 An element selected by its index >>digits[3] >>getitem(digits,3) 8 6 Concatenation and repetition >>[2,7]+digits*2 >>add([2,7],mul(digits,2)) [2,7,1,8,2,8,1,8,2,8] [2,7,1,8,2,8,1,8,2,8] Nested listsWorking with Lists >>> digits = [1, 8, 2, 8] 4 The number of elements >>> len(digits) 4 An element selected by its index >>> digits[3] 8 Nested lists >>> [2, 7] + digits * 2 [2, 7, 1, 8, 2, 8, 1, 8, 2, 8] Concatenation and repetition >>> getitem(digits, 3) 8 >>> add([2, 7], mul(digits, 2)) [2, 7, 1, 8, 2, 8, 1, 8, 2, 8] >>> digits = [2//2, 2+2+2+2, 2, 2*2*2]