deepcopy的用法

juhugufudu

浅拷贝:

1. >>> a = [11,22,33]
   
2. >>> b = a
   
3. >>> id(b)
   
4. 2440623510600
   
5. >>> id(a)
   
6. 2440623510600
   
7. >>> a is b
   
8. True
   
9. >>>

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深拷贝:

1. >>> import copy
   
2. >>> c = copy.deepcopy(a)
   
3. >>> id(c)
   
4. 2440653257544
   
5. >>> id(a)
   
6. 2440623510600
   
7. >>> a.append(77)
   
8. >>> b
   
9. [11, 22, 33, 77]
   
10. >>> a
    
11. [11, 22, 33, 77]
    
12. >>> c
    
13. [11, 22, 33]
    
14. >>>

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ykn大神6

支持楼主！！！

Vicissitude357

感谢