封装，继承，多态

# 封装 将方法封装在类下面
class Animal:
    def run(self):
        print("animal run")

    def eat(self):
        print("animal eat")

    def talk(self):
        print("animal talk")

# a = Animal()
# a.run()
# 继承 Person类继承了Animal类的三个方法
class Person(Animal):  # 继承
    def study(self):
        print("person study")

    #多态 同一个方法 在子类下面重写 
    def talk(self):
        print("person talk")


class Dog(Animal):
    def talk(self):
        print("dog talk")

p = Person()
# print(p.eat())
p.talk()
d = Dog()
d.talk()