需要使用线程将倒数计时器添加到游戏中

问：

我在python上写了一个简单的骰子游戏，我想为它实现一个倒数计时器！这是一个无休止的循环！也许是某种线程生成器？我是线程模块的新手。

如果我尝试为每个玩家向游戏添加两个线程：我会收到“RuntimeError： threads can only be started once”错误

import random
import os
import time
from threading import Thread


class Player:
    def __init__(self, name) -> None:
        self.name = name
        self.score = 0

    def add_points(self, points):
        self.score += points


def roll_dice():
    min_val = 1
    max_val = 6
    dice_value = random.randint(min_val, max_val)
    return dice_value

这是我的倒计时时间

def countdown(user_time):
    while user_time >= 0 and not done:
        mins, secs = divmod(user_time, 60)
        timer = '{:02d}:{:02d}'.format(mins, secs)
        print(timer, end='\r')
        time.sleep(1)
        user_time -= 1

关键是：如果玩家不停止倒计时，他就输了

player1_name = input('enter name: ')
player2_name = input('enter name: ')
player1 = Player(player1_name)
player2 = Player(player2_name)
roll_again = 'y'



if __name__ == '__main__':
    while roll_again.lower() == 'yes' or roll_again.lower() == 'y':
        os.system('cls' if os.name == 'nt' else 'clear')


        """ Player 1 """

        print(f'Hurry up {player1_name}')

        # new thread generated here

        input('press enter to stop\n')

如果玩家没有用输入打断倒计时 - 游戏结束

        done = True
        # thread join
        player1_roll = roll_dice()
        player1.add_points(player1_roll)
        print(f'{player1.name} has {player1.score}')



        """ Player 2 """

        print(f'Hurry up {player2_name}')

        # new thread generated here

        input('press enter to stop\n')
        done = True
        #thread join
        player2_roll = roll_dice()
        player2.add_points(player2_roll)
        print(f'{player2.name} has {player2.score}')

        if player1.score >= 30:
            print(f'game over: {player1_name} has won')
            break
        elif player2.score >= 30:
            print(f'game over: {player2_name} has won')
            break

        roll_again = input('Roll Again? ')