Python学习-55 小游戏- 猜大小

#游戏开始，首先玩家选择大小，选择完成后开始摇骰子（11<=总值<=18为大，3<=总值<=10为小）
 
import random
 
def roll_dice(numbers=3,points=None):          # 创建3个筛子numbers，创建点数points
    print('<<<<roll the dice!>>>>')
    if points is None:
        points = []                             # 把点数放到一个空的列表里
    while numbers > 0:
        point = random.randrange(1,7)
        points.append(point)
        numbers = numbers - 1
    return points
 
def roll_result(total):                 # 判断大小
    isbig = 11 <= total <= 18
    issmall = 3 <= total <=10
    if isbig:
        return 'big'
    elif issmall:
        return 'small'
 
def start_game():
    print('<<<<GAME STRATS!>>>>')
    choices = ['big','small']
    your_choice = input('big or small:')
    if your_choice in choices:
        points = roll_dice()
        total = sum(points)
        youwin = your_choice == roll_result(total)
        if youwin:
            print('The points are',points,'YOU WIN!')
        else:
            print('The points are',points,'YOU LOSE!')
    else:
        print('invalid words')
        start_game()
start_game()