print("@1--------------------------") a=[1,2,3] print(a) print("@2--------------------------") print(a[1]) print("@3--------------------------") a.append(4) print(a) print("@4--------------------------") for i in range(5,9): a.append(i) print(a) print("@5--------------------------") sum=0 for i in a: sum += i print(sum) print("@6--------------------------") sum =0 for i in range(9): sum += i print(sum) print("@7--------------------------") print(list(range(1,9))) print("@8--------------------------") print(len(a))