如何恰當地繼承「dict」？

Question

class MyDict(dict): 
    def __init__(self, *args): 
     #fill in here 

如何編寫構造函數，以便將密鑰'name'設置爲'james'。

d = MyDict() 
print d['name'] ....this should print out "james" 

Answer 1

在（C）的Python 2.5.2：

>>> class MyDict(dict): 
... def __init__(self, *args, **kwargs): 
...  super(MyDict, self).__init__(*args, **kwargs) 
...  self['name'] = 'james' 
... 
>>> d = MyDict() 
>>> print d['name'] 
james 

Answer 2

字典的基本子類將允許基本存儲：

class MyDict(dict): 
    def __init__(self, *args): 
     super(MyDict, self).__init__(*args, **kwargs) 
     self['name'] = 'james' 

對於更復雜的存儲，你可能想看看into __setitem__和__getitem__