python小游戏----猜大小

#!/user/bin/env python# -*- coding:utf-8 -*-import randomdef roll_dice(numbers=3, points=None):    print('----- 摇骰子 -----')    if points is None:        points = []    while numbers > 0:        point = random.randrange(1, 7)        points.append(point)        numbers = numbers - 1    return pointsdef roll_result(total):    isBig = 11 <= total <= 18    isSmall = 3 <= total <= 10    if isBig:        return '大'    elif isSmall:        return '小'def start_game():    your_money = 1000    while your_money > 0:        print('----- 游戏开始 -----')        choices = ['大', '小']        your_choice = raw_input('请下注，大 or 小：')   #这个位置如果用input函数时输入的字符串要带引号        your_bet = input('下注金额：')        if your_choice in choices:            points = roll_dice()            total = sum(points)            youWin = your_choice == roll_result(total)            if youWin:                print('骰子点数：', points)                print('恭喜，你赢了 {} 元，你现在有 {} 元本金'.format(your_bet, your_money + int(your_bet)))                your_money = your_money + int(your_bet)            else:                print('骰子点数：', points)                print('很遗憾，你输了 {} 元，你现在有 {} 元本金'.format(your_bet, your_money - int(your_bet)))                your_money = your_money - int(your_bet)        else:            print('格式有误，请重新输入')    else:        print('游戏结束')start_game()