从标准库添加到Python字典属性

本文介绍了从标准库添加到Python字典属性的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我想知道，如果你能在attibute添加到Python字典。

I was wondering if you could add an attibute 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'

反正是有迅速增加我的描述属性，而无需复制dict类和重载的构造函数。我认为这将是简单的，但我想我错了。

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.

谢谢，Ĵ

推荐答案

刚刚从获得字典：

class MyDict(dict): pass

MyDict 的实例可以有自定义属性：

Instances of MyDict can have custom attributes:

>>> d = MyDict() >>> d.my_attr = "whatever" >>> d.my_attr 'whatever'