python declare array of size n
>>> n = 5 #length of list >>> list = [None] * n #populate list, length n with n entries "None" >>> print(list) [None, None, None, None, None] >>> list.append(1) #append 1 to right side of list >>> list = list[-n:] #redefine list as the last n elements of list >>> print(list) [None, None, None, None, 1] >>> list.append(1) #append 1 to right side of list >>> list = list[-n:] #redefine list as the last n elements of list >>> print(list) [None, None, None, 1, 1] >>> list.append(1) #append 1 to right side of list >>> list = list[-n:] #redefine list as the last n elements of list >>> print(list) [None, None, 1, 1, 1]