Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
318 views
in Technique[技术] by (71.8m points)

python - Better way to access super class method in multiple inheritance

class Animal(object):
    def eat(self):
        print("I eat all")

class C(object):
    def eat(self):
        print("I too eat")

class Wolf(C, Animal):
    def eat(self):
        print("I am Non Veg")
        super(Wolf, self).eat()
        Animal.eat(self)

w = Wolf()
w.eat()

I am learning multiple inheritance in python, I want to access Animal and C method eat from derived class using super method.

Default call of super inside calls C class method eat, but to call Animal class method I used Animal.eat(self) .My question is how can I call Animal class method using super method.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

If you want to do sane multiple inheritance, you need everyone to be calling super except exactly one base class, which has as its duty not to call super. Having two completely-independent base classes with the same method isn't something that makes sense using OOP theory and is not something that Python has the tooling to handle well.

You might see two apparently-independent base classes used in a lot of examples, but in those cases the example method is usually __init__, and the single non-super-calling base class for it is object.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...