lstA = [1, 2] lstB, lstC = [lstA, lstA * 3] lstA[1] = 100 print(lstA, lstB, lstC)
[1, 2] [1, 2] [1, 2, 1, 2, 1, 2]
[1, 100] [1, 100] [1, 100, 1, 100, 1, 100]
[1, 100] [1, 2] [1, 2, 1, 2, 1, 2]
[1, 100] [1, 100] [1, 2, 1, 2, 1, 2]