如何从Python中的self方法获取自我对象名称 [英] How to get self object name from self method in Python

问题描述

我试图找到一种方法来自动打印对象引用名称只需一个打印对象
更具体。
假设我有一个类：

I am trying to find a way to automatically print the object reference name with just a print object To be more specific. Lets say I have a class:

class A:
    def __init__(self):
        self.cards = []

    def __str__(self):
        # return a string representation of A
        return "A contains " ...
    ...

现在每当我创建一个对象

Now whenever i create an object

test = A()

code> print test 它会得到类似的东西（不介意点）

and I use the print test it will get something like (do not mind the dots)

A contains ...

我想实现的是自动打印对象引用名称，而不是类名：

What I want to achieve is to automatically print the object reference name instead of the class name:

test contains ...

self .__ class __ 或 self .__ name __ 一个奇怪的字符串，如< class'__main __。A'> 。

The self.__class__ or self.__name__ wont work since it returns a weird string like <class '__main__.A'>.

> __ str __ 实现这个？
提前感谢。

How should __str__ be implemented to achieve this? Thanks in advance.

推荐答案

正如你对你的问题的评论所说的，这是不可能的，考虑以下方法的代码：

As the comments on your question have stated, it is not possible and also unwise, consider something along the lines of the following approach instead:

class A:
    def __init__(self, name):
        self.cards = []
        self.name = name

    def __str__(self):
        return '{} contains ...'.format(self.name)

>>> test = A('test')
>>> print test
test contains ...

>>> a = A('hello')
>>> print a
hello contains ...

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