编写一个类Animal，描述动物的属性和行为，通过继承Animal类定义Bird类、Fish类，分别描述鸟类 和鱼类的属性和行为，具体要求如下：(1)Animal类定义属性name、color、foot Nurnber，描述动物的名称、颜色、脚的只数；定义成员方法showInfo0，用于输出动物的属性信息；定义成员方法move0，用于描述动物如何行走(输出“可以通过飞、跑、游等方式移动身体〞；(2)通过继承Animal定义Bird类，改写 父类的move方法(输出“通过飞来移动身体”)，增加一个方法nest0用于描述在哪里筑巢；(3)通过继承 Animal定义Fis类，改写父类的move方法(输出"通过游来移动身体”，增加一个属性length，用于描述 鱼的身长，改写父类的shorolnfo0方法，除了输出 narme、color、foot Number属性，还要输出鱼的身长;（4)编写测试类，分别创建上述3个类的对象，并给对象的所有属性赋值，调用对象的所有方法。

下面是对应的代码实现：

class Animal:
    def __init__(self, name, color, foot_number):
        self.name = name
        self.color = color
        self.foot_number = foot_number

    def show_info(self):
        print(f"Name: {self.name}\nColor: {self.color}\nFoot Number: {self.foot_number}")

    def move(self):
        print("Can move by flying, running, swimming, etc.")


class Bird(Animal):
    def __init__(self, name, color, foot_number):
        super().__init__(name, color, foot_number)

    def move(self):
        print("Can move by flying.")

    def nest(self, place):
        print(f"{self.name} builds nest on {place}")


class Fish(Animal):
    def __init__(self, name, color, foot_number, length):
        super().__init__(name, color, foot_number)
        self.length = length

    def show_info(self):
        super().show_info()
        print(f"Length: {self.length}")

    def move(self):
        print("Can move by swimming.")


# Testing
bird = Bird("Sparrow", "Brown", 2)
bird.show_info()
bird.move()
bird.nest("Tree")

fish = Fish("Salmon", "Pink", 0, 20)
fish.show_info()
fish.move()

animal = Animal("Tiger", "Orange", 4)
animal.show_info()
animal.move()

输出结果：

Name: Sparrow
Color: Brown
Foot Number: 2
Can move by flying.
Sparrow builds nest on Tree
Name: Salmon
Color: Pink
Foot Number: 0
Length: 20
Can move by swimming.
Name: Tiger
Color: Orange
Foot Number: 4
Can move by flying, running, swimming, etc.