1、请用面向对象的思想编写一个小游戏，人狗大站。 2个角色，人和狗，游戏开始后，生成2个人，3条狗，互相混战，人被狗咬了会掉血，狗被人打了也掉血，狗和人的攻击力，具备的功能都不一样。

下面是一个简单的人狗大站游戏的面向对象代码实现，包含人、狗、战斗等类：

import random

class Person:
    def __init__(self, name, hp, atk):
        self.name = name
        self.hp = hp
        self.atk = atk
    
    def attack(self, dog):
        dog.be_attacked(self.atk)
    
    def be_attacked(self, dog_atk):
        self.hp -= dog_atk
    
    def is_alive(self):
        return self.hp > 0

class Dog:
    def __init__(self, name, hp, atk):
        self.name = name
        self.hp = hp
        self.atk = atk
    
    def attack(self, person):
        person.be_attacked(self.atk)
    
    def be_attacked(self, person_atk):
        self.hp -= person_atk
    
    def is_alive(self):
        return self.hp > 0

class Battle:
    def __init__(self, persons, dogs):
        self.persons = persons
        self.dogs = dogs
    
    def start(self):
        while len(self.persons) > 0 and len(self.dogs) > 0:
            attacker, defender = self.choose_attacker_and_defender()
            if isinstance(attacker, Person):
                attacker.attack(defender)
            else:
                attacker.attack(defender)
            self.check_alive()
    
    def choose_attacker_and_defender(self):
        attacker = random.choice(self.persons + self.dogs)
        if isinstance(attacker, Person):
            defender = random.choice(self.dogs)
        else:
            defender = random.choice(self.persons)
        return attacker, defender
    
    def check_alive(self):
        self.persons = [person for person in self.persons if person.is_alive()]
        self.dogs = [dog for dog in self.dogs if dog.is_alive()]

# 测试代码
persons = [Person("Tom", 100, 10), Person("Jerry", 80, 15)]
dogs = [Dog("Spike", 120, 8), Dog("Tyke", 80, 12), Dog("Tuffy", 60, 20)]
battle = Battle(persons, dogs)
battle.start()
print("Result:")
print("Persons:")
for person in persons:
    print(f"{person.name}, HP: {person.hp}")
print("Dogs:")
for dog in dogs:
    print(f"{dog.name}, HP: {dog.hp}")

在上面的代码中，我们定义了`Person`和`Dog`两个类来表示人和狗，都具有`name`、`hp`和`atk`属性，以及`attack`和`be_attacked`方法。`Battle`类表示战斗，具有`start`方法开始进行战斗，`choose_attacker_and_defender`方法随机选择攻击者和防守者，`check_alive`方法检查战斗是否结束。

在测试代码中，我们生成了2个人和3只狗，然后创建`Battle`实例进行战斗，最后输出战斗结果。