从 Python 类中获取所有 @properties [英] Get all @properties from a Python Class

问题描述

在 Python 中，如何获取一个类的所有 属性，即由 @property 装饰器创建的所有成员?

In Python, how can I get all properties of a class, i.e. all members created by the @property decorator?

stackoverflow 上至少有两个问题^{[1, 2]} 混淆了术语property 和 attribute，误用了property 作为 attribute 的同义词，在 Python 上下文中会产生误导.因此，即使其他问题的标题可能暗示了这一点，但它们并没有回答我的问题.

There are at least two questions^{[1, 2]} on stackoverflow which confound the terms property and attribute, falsely taking property as a synonym for attribute, which is misleading in Python context. So, even though the other questions' titles might suggest it, they do not answer my question.

[1]:打印 Python 类的所有属性
[2]:是否有内置函数可以打印对象的所有当前属性和值?

推荐答案

我们可以使用 cls.__dict__ 获取类 cls 的所有属性代码>.由于property本身就是某个类，我们可以检查cls的哪些属性是property的实例:

We can get all attributes of a class cls by using cls.__dict__. Since property is a certain class itself, we can check which attributes of cls are an instance of property:

from typing import List


def properties(cls: type) -> List[str]:
    return [
        key
        for key, value in cls.__dict__.items()
        if isinstance(value, property)
    ]

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