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 ...