Due to MRO, you should knowingly list the superclasses in the subclass definition. In the following example, class D is based on classes B and C, whereas class E is based on classes C and B (the order matters!).
class D(B, C):
pass
class E(C, B):
pass
As a result, those classes can behave totally differently, because the order of the superclasses is different.
Code
class A:def info(self):
print('Class A')
class B(A):
def info(self):
print('Class B')
class C(A):
def info(self):
print('Class C')
class D(B, C):
pass
class E(C, B):
pass
D().info()
E().info()