twochild_oneparent_class.py

class ClassChild1():
    def __init__(self, initc):
        self.c = initc

    def func_c(self):
        self.c = self.c/5.0

        
class ClassChild2():
    def __init__(self, initd):
        self.d = 1.0 + initd

    def func_d(self):
        self.d = self.d/2.0

class ClassParent(ClassChild1, ClassChild2):
    
    def __init__(self):
        self.a = 1.0
        ClassChild1.__init__(self, 1.0)
        ClassChild2.__init__(self, 2.0)
        
    def func_a(self):
        self.a = self.a/10.0


        
if __name__ == "__main__":
    cls = ClassParent()
    print(cls.a, cls.c, cls.d)