类继承 type

[cc7756789]

这是一段 flask_admin 的代码
继承自type和继承自object有什么不同？
为什么要用type.__init__() 调用type的 __init__， type里有东西吗？

class AdminViewMeta(type):
    """
        View metaclass.
        Does some precalculations (like getting list of view methods from the class) to avoid
        calculating them for each view class instance.
    """
    def __init__(cls, classname, bases, fields):
        type.__init__(cls, classname, bases, fields)

[aisk]

这是个 metaclass，请参考： http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python