range()函数

1.
for i in range(5)
ptint(i)
输出：i=0,1,2,3,4
2.
range(5, 10)
输出： 5, 6, 7, 8, 9
3.
range(0, 10 , 3)
输出： 0, 3, 6, 9
4.
range(-10 , -100 , -30)
输出： -10 , -40 , -70
5.
a = [‘Mary ‘, ‘had’, ‘a’, ‘little ‘, ‘lamb’]
for i in range(len(a)):
print(i, a[i])
输出：
0 Mary
1 had
2 a
3 little
4 lamb