not_super.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import print_function

class ParentA(object):

    def __init__(self):
        self.a = "parent a"

class ParentB(object):

    def __init__(self):
        self.b = "parent b"

class Child(ParentA, ParentB): pass

c = Child()
print(c.a)
# >>> "parent a"
# print(c.b)
## >>> AttributeError