metaclass

参考：

两种方法:

  1. six.with_metaclass

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    import six


class MyMeta:
    def __new__(self, cls, name, bases, attrs):
        pass


class MyBase:
    pass


class MyClass(six.with_metaclass(MyMeta, MyBase)):
    pass

    • 接口说明

      • six.with_metaclass(MetaClass, *otherBases)

  2. six.add_metaclass

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    import six


class MyMeta:
    def __new__(self, cls, name, bases, attrs):
        pass


class MyBase:
    pass

@six.add_metaclass(MyMeta)
class MyClass(myBase):
    pass

字符串类型 str

six.text_type