抽象基类是否可以使用非抽象方法？

from abc import ABC, abstractmethod

class Animal(ABC):

    @abstractmethod
    def makeSound(self):
        pass

    def eat(self):
        print("The animal is eating")

class Dog(Animal):

    def makeSound(self):
        print("Woof!")

class Cat(Animal):

    def makeSound(self):
        print("Meow!")

dog = Dog()
dog.makeSound() # 输出 "Woof!"
dog.eat() # 输出 "The animal is eating"

cat = Cat()
cat.makeSound() # 输出 "Meow!"
cat.eat() # 输出 "The animal is eating"