Python 2.7.8如何重新启动游戏代码

我在看如何重新启动这个代码，而不实际重新启动游戏。我希望能够有游戏重新启动其上

print 'Welcome to the game of NIM: '
player=1
state=21
print 'The number of objects is now ',state
while True:
    print 'Player ',player
    while True:
        move=input('What is your move? ')
        if move in [1,2,3] and move<state:
            break
        print 'Illegal move.'
    state=state-move
    print 'The number of objects is now ',state

    if state==1:
        print 'Player ',player,' wins!'
        break
    if player==1:
        player=2
    else:
        player=1
print 'Game is over.'

print'欢迎来到NIM的游戏：'
玩家=1
州=21
打印“现在对象的数量”，状态为
尽管如此：
打印“播放器”，播放器
尽管如此：
移动=输入（'你的移动是什么？'）
如果移入[1,2,3]并移动，则可以将代码放入函数中，并在while循环中调用该函数：

from sys import exit #To exit if the user does not want to try again
print 'Welcome to the game of NIM: '
def game():
    player=1
    state=21
    print 'The number of objects is now ',state
    while True:
        print 'Player ',player
        while True:
            move=input('What is your move? ')
            if move in [1,2,3] and move<state:
                break
            print 'Illegal move.'
        state=state-move
        print 'The number of objects is now ',state

        if state==1:
            print 'Player ',player,' wins!'
            break
        if player==1:
            player=2
        else:
            player=1
    if raw_input('Would you like to try again? ').lower().startswith('y'):
        return #To exit from the function cleanly
    exit() #To exit from the program cleanly if the user does not want to try again
def run():
    while True:
        game()
if __name__ == '__main__':
    run()

from sys import exit#如果用户不想重试，则退出
打印“欢迎来到尼姆的游戏：”
def game（）：
玩家=1
州=21
打印“现在对象的数量”，状态为
尽管如此：
打印“播放器”，播放器
尽管如此：
移动=输入（'你的移动是什么？'）
如果移入[1,2,3]和移动如何准确退出？我刚刚编辑了代码，现在，程序将询问用户是否想重试，如果他们想重试，它将重新启动，如果不想，它将使用我添加的链接退出。