本文介紹了從標準庫向 Python 字典添加屬性的處理方法，對大家解決問題具有一定的參考價值，需要的朋友們下面隨著小編來一起學習吧！
問題描述
我想知道是否可以向 Python 字典添加屬性?
I was wondering if you could add an attribute to a Python dictionary?
class myclass():
def __init__():
self.mydict = {} # initialize a regular dict
self.mydict.newattribute = "A description of what this dictionary will hold"
>>> AttributeError: 'dict' object has no attribute 'newattribute'
setattr(self.mydict, "attribute", "A description of what this dictionary will hold"
>>> AttributeError: 'dict' object has no attribute 'newattribute'
有沒有辦法快速添加我的描述屬性，而不必復制 dict 類和重載構造函數.我以為這很簡單，但我想我錯了.
Is there anyway to quickly add my description attribute without having to copy the dict class and overloading the constructor. I thought it would be simple, but I guess I was wrong.
推薦答案
直接派生自dict:
class MyDict(dict):
pass
MyDict 實例的行為類似于 dict，但可以具有自定義屬性:
Instances of MyDict behave like a dict, but can have custom attributes:
>>> d = MyDict()
>>> d.my_attr = "whatever"
>>> d.my_attr
'whatever'
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