# 2.X only. Use list(range(10)) in 3.X. >>> l = range(10) >>> l [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
my_list = ['20', '40', '60'] len(my_list) # 3
li = [None] * 5 # [None, None, None, None, None] li = [0] * 5 # [0, 0, 0, 0, 0]