super(type, obj) 和 super(type, type)的区别在哪？

class Person:
    def __init__(self, name):
        self.name = name
    # Getter function
    @property
    def name(self):
        return self._name
    # Setter function
    @name.setter
    def name(self, value):       
        if not isinstance(value, str):
            raise TypeError('Expected a string')
        self._name = value
    # Deleter function
    @name.deleter
    def name(self):
        raise AttributeError("Can't delete attribute")

class SubPerson(Person):
    @property
    def name(self):
        print('Getting name')
        return super().name
    @name.setter
    def name(self, value):
        print('Setting name to', value)
        super(SubPerson, SubPerson).name.__set__(self, value)
    @name.deleter
    def name(self):
        print('Deleting name')
        super(SubPerson, SubPerson).name.__delete__(self)

s = SubPerson('Guido')
print(s.name)

当我将 super(SubPerson, SubPerson).name.__set__(self, value) 变成 super(SubPerson, self).name.__set__(self, value), 报了这样的错误

AttributeError: 'SubPerson' object has no attribute '_name'

为什么?