Python in 语句

qiuyouzhi

Python in 语句

语法：

1. sth in sth

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例子：

1. >>> a = 'q'
   
2. >>> b = 'qiuyouzhi'
   
3. >>> a in b
   
4. True
   
5. >>> # b 里面有 a, 所以为True
   
6. >>> a = 'qiuyou'
   
7. >>> a in b
   
8. True
   
9. >>> # 可以多个字符匹配
   
10. >>> a = 5
    
11. >>> b = 10
    
12. >>> a in b
    
13. Traceback (most recent call last):
    
14.   File "<pyshell#13>", line 1, in <module>
    
15.     a in b
    
16. TypeError: argument of type 'int' is not iterable
    
17. >>> # 只能字符串比较

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