用python设计一款人机对战--剪刀石头布的游戏，用while条件循环实现先赢三局者胜。

好的，我可以为您提供这个游戏的代码。请注意，代码中的注释会解释每个部分的功能。

import random

# 定义游戏规则
rules = {'rock':'scissors', 'scissors':'paper', 'paper':'rock'}

# 定义玩家胜利次数
player_wins = 0

# 定义电脑胜利次数
computer_wins = 0

# 定义游戏进行的轮数
rounds = 0

# 主循环，直到有一方赢得3局为止
while player_wins < 3 and computer_wins < 3:
    print('Round', rounds+1)
    print('Player wins:', player_wins)
    print('Computer wins:', computer_wins)
    
    # 玩家输入选择
    player_choice = input('Enter rock/paper/scissors: ').lower()
    
    # 检查玩家输入是否合法
    while player_choice not in rules.keys():
        player_choice = input('Invalid choice. Enter rock/paper/scissors: ').lower()
    
    # 电脑随机选择
    computer_choice = random.choice(['rock', 'paper', 'scissors'])
    
    # 输出电脑选择
    print('Computer chooses', computer_choice)
    
    # 比较选择，判断胜负
    if rules[player_choice] == computer_choice:
        print('You win!')
        player_wins += 1
    elif rules[computer_choice] == player_choice:
        print('Computer wins!')
        computer_wins += 1
    else:
        print('Tie!')
    
    # 增加游戏轮数
    rounds += 1

# 输出最终胜利者
if player_wins > computer_wins:
    print('Congratulations! You win the game!')
else:
    print('Sorry, computer wins the game!')

运行代码后，您将会看到游戏的运行界面和结果。祝您玩得愉快！