Why can't I access parent class attributes via super() in python?

Question

Python

I have never been a programmer, but sometimes I peep with one eye. It became curious - why is it possible to access the methods and properties of the parent class through super (), but not the attributes?

class User:
    count = 0
    def __init__(self, n, l, p):
        self.__name = n
        self.__login = l
        self.__password = p
        User.count += 1

class SuperUser(User):
    count = 0

    def __init__(self, n, l, p, role):
        super().__init__( n, l, p)
        self.__role = role
        SuperUser.count += 1
        super().count -= 1

Here is the last line throws AttributeError: 'super' object has no attribute 'count'
Please explain.