Python:如何使对象属性引用调用方法

2022-01-13 00:00:00 python attributes

问题描述

我想要一个像 object.x 这样的属性调用来返回某个方法的结果，比如 object.other.other_method().我该怎么做?

I'd like for an attribute call like object.x to return the results of some method, say object.other.other_method(). How can I do this?

我很快问了一点:看起来我可以用

I asked a bit soon: it looks like I can do this with 

object.__dict__['x']=object.other.other_method()

这是一种可行的方法吗?

Is this an OK way to do this?

解决方案

使用属性装饰器

class Test(object): # make sure you inherit from object
    @property
    def x(self):
        return 4

p = Test()
p.x # returns 4

使用 __dict__ 很脏，尤其是当 @property 可用时.

Mucking with the __dict__ is dirty, especially when @property is available.

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