#22.12.19

cube = [10, 20, 30, 45, 50]
cube
cube[3]
cube
cube[5] #error out of range
cube.append(60)
cube.apppend(4+10+20+36)
cube

 programA = ['A','B','C','D','E']
 programB = ['a','b','c','d','d','e']
 programC = programA + programB
 programC
 ['A', 'B', 'C', 'D', 'E', 'a', 'b', 'c', 'd', 'd', 'e']
 programD = [1,2,3,4,5]
 programC = programC + programD
 programC
 ['A', 'B', 'C', 'D', 'E', 'a', 'b', 'c', 'd', 'd', 'e', 1, 2, 3, 4, 5]
 programC[9:] = []
 programC[5:9] = programD
 programC
 ['A', 'B', 'C', 'D', 'E', 1, 2, 3, 4, 5]

 len(programC)

 a = [10, 20, 30, 40, 50]
 b = [60, 70, 80, 90, 100]
 c = [110, 120, 130, 140, 150]
 x = [a, b ,c]
 x 

 x[0][]
 x[][3]
 x[1][2]
 x[][]
 x[0][0]
 x[1][1]
 x[] #error

 x[1][2] + x[2][0]
 x[0][1] - x[2][1]
 >>> Fibonacci
