多重继承

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# coding:utf-8

class Tool():
    def work(self):
        return 'tool work'
    def car(self):
        return 'car will run'

class Food():
    def work(self):
        return 'food work'
    def cake(self):
        return 'i like cake'

class Person(Tool,Food): # 形参从左到右继承。
    pass

p = Person()
p_car = p.car()
p_cake = p.cake()
p_work = p.work()
print(p_car,p_cake,': ',p_work)
print(Person.__mro__)  # 查看对象的继承链。