新式类多继承的查找顺序
新式类的多继承遵循C3算法
class X:
pass
class S(X):
pass
class A(X):
pass
class B(S):
pass
class C(A):
pass
class D(B):
pass
class E(C):
pass
class F(D, E, B):
pass
f1 = F()
print(F.mro())
# [<class '__main__.F'>, <class '__main__.D'>, <class '__main__.E'>, <class '__main__.B'>, <class '__main__.C'>, <class '__main__.A'>, <class 'object'>]
# 新式类多继承
方法：