python - 如何在python中建模特殊类实例

Question

我想在 python 中创建一个类，其中包括类的特殊实例的类级常量。即是这样的：

class Testing:
    SPECIAL = Testing("special")

    def __init__(self, name):
        self.name = name


def test_specials():
    norm = Testing("norm")
    assert norm.name == "norm"

    assert Testing.SPECIAL.name == "special"

如果我尝试上面的代码，它会失败说：NameError: name 'Testing' is not defined.

我应该如何建模？

标签： python

Answer 1

感谢安东尼的上述回答。解决方案是这样的：

class Testing: 
    def __init__(self, name):
        self.name = name

Testing.SPECIAL = Testing("special")

def test_specials():
    norm = Testing("norm")
    assert norm.name == "norm"

    assert Testing.SPECIAL.name == "special"