python for 循环

>>> tem = 'siyecao';

>>> tmp = 'siyecao'

>>> for i in tmp

SyntaxError: invalid syntax

>>> for i in tmp:

    print(i,end = '')

siyecao

>>> for i in tmp :

    print(i,end='/')

s/i/y/e/c/a/o/
>>>

>>> tmp = ['测试','huche','乱说']

>>> for i in tmp:

    print(i,i.len(i))

Traceback (most recent call last):

  File "<pyshell#34>", line 2, in <module>

    print(i,i.len(i))

AttributeError: 'str' object has no attribute 'len'

>>> for i in tmp :

    print(i,len(i))

    

测试 2

huche 5

乱说 2

>>>

>>> range(10)

range(0, 10)

>>> list(range(10))

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

>>> for i in range(10):

    print(i,len(i))

Traceback (most recent call last):

  File "<pyshell#42>", line 2, in <module>

    print(i,len(i))

TypeError: object of type 'int' has no len()

>>> for i in range(10):

    print(i)

    

0

1

2

3

4

5

6

7

8

9

>>> for i in range(0,10,2):

    print(i)

    

0

2

4

6

8

>>>