1. import types  

2. 
   

3. aaa = 0

4. print type(aaa)  

5. if type(aaa) is types.IntType:  

6.    print "the type of aaa is int"  

7. if isinstance(aaa,int):  

8.    print "the type of aaa is int"  

9. 
   

10. bbb = ‘hello‘

11. print type(bbb)  

12. if type(bbb) is types.StringType:  

13.    print "the type of bbb is string"  

14. if isinstance(bbb,str):  

15.    print "the type of bbb is string"  

16. 
    

17. #if the type is NoneType,the isinstance does not work  

18. #we should judge the NoneType like below  

19. #if row is None  

20. #if type(row) is types.NoneType  

21. 
    

22. #In my opinion,use the types to judge the type of a param is convinient<SPANstyle="BACKGROUND-COLOR: rgb(255,255,255); FONT-FAMILY: Arial">, use the isinstance to judge whether a instance is a type of a class or not</SPAN>

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