class run1:
  pass
class run2:
  pass
class runall(run1,run2):
  pass

class run1:
  pass
class run2(run1):
  pass
class runall(run2):
  pass

Method Resolution Order ในภาษา Python

• __mro__ เป็น attribute
• mro() เป็น method

class A(object): pass
class B(object): pass
class C(object): pass

class D(B,C): pass
class E(D,C): pass

class F(E,C,A): pass
print(F.mro())

[<class '__main__.F'>, <class '__main__.E'>, <class '__main__.D'>, <class '__main__.B'>, <class '__main__.C'>, <class '__main__.A'>, <type 'object'>]