class Dog(Mammal, Runnable):
pass Multiple inheritance inherits all the functions of different classes. This design is called Mixln, and its purpose is to add multiple functions to a class. In this way, when designing a class, we give priority to combining multiple MixIns through multiple inheritance. functions, rather than designing multiple levels of complex inheritance relationships.
Such as:
class MyTCPServer(TCPServer, ForkingMixIn):
pass