请帮我用Python语言写出运行狼人杀游戏的代码

以下是一个简单的狼人杀游戏的Python代码示例：

import random

# 定义角色类
class Player:
    def __init__(self, name, role):
        self.name = name
        self.role = role
        self.alive = True

# 定义游戏类
class WerewolfGame:
    def __init__(self):
        self.players = []
        self.roles = ['狼人', '狼人', '村民', '村民', '预言家', '女巫', '猎人']
        self.alive_players = []

    # 添加玩家
    def add_player(self, name):
        role = random.choice(self.roles)
        self.roles.remove(role)
        player = Player(name, role)
        self.players.append(player)
        self.alive_players.append(player)

    # 游戏进行一轮
    def play_round(self):
        print('天黑请闭眼...')
        # 狼人行动
        wolfs = [player for player in self.alive_players if player.role == '狼人']
        for wolf in wolfs:
            print(wolf.name, '请睁眼，并选择要杀的玩家：')
            for i, player in enumerate(self.alive_players):
                print(i+1, player.name)
            target = int(input()) - 1
            victim = self.alive_players[target]
            print(wolf.name, '选择了', victim.name, '。')
            victim.alive = False

        # 天亮
        print('天亮了，昨晚死亡的玩家有：')
        for player in self.players:
            if not player.alive:
                print(player.name, '（', player.role, '）')
                self.alive_players.remove(player)

    # 开始游戏
    def start_game(self):
        print('狼人杀游戏开始！')
        num_players = int(input('请输入玩家人数：'))
        for i in range(num_players):
            name = input('请输入玩家名称：')
            self.add_player(name)

        while len(set([player.role for player in self.players])) > 1:
            self.play_round()

        roles = set([player.role for player in self.players])
        print('游戏结束，胜利者为：', roles)

# 实例化游戏对象并开始游戏
game = WerewolfGame()
game.start_game()

请注意，这只是一个简单的示例代码，游戏规则可能并不完整。你可以根据自己的需求和游戏规则进行修改和扩展