遍历序列的两种方式

number = [0,1,2,3,5,7,8]
for i in number:      #第一种
    print(i)
for i in range(len(number)):   #第二种
    print(number[i])

str1 = 'abcdefg'
for j in str1:
    print(j)
for j in range(len(str1)):
    print(str1[j])

输出：

0
1
2
3
5
7
8
0
1
2
3
5
7
8
a
b
c
d
e
f
g
a
b
c
d
e
f
g