Question

在使user input终止消息后停止循环时，我遇到了一些麻烦。基本上，一旦在0 (zero)字段中输入Enter bet，程序就必须打印终止消息并结束。但是，它继续循环，询问何时应跳过输入"Choose a number between 2 and 12"的下一行。我知道break或exit()可以解决我的问题，但是这些不是可接受的解决方案。在0 (zero)字段中输入Enter bet后，我需要它来完成并打印终止消息。不要继续执行该程序。

NEEDED输出示例：

you have $500 in your bank # starting amount
Enter bet (or 0 to quit): 0 
Thanks for playing!

相反，我得到的是：

Enter bet (or 0 to quit): 0
Thanks for playing!
Choose a number between 2 and 12: # where the program continues to run 
# when it shouldn't. The user should only see this input field if they enter
# number above 0

这是代码

import random

def rollDice(cnt):
    die1 = random.randint(1,6)
    die2 = random.randint(1,6)
    x = int(die1 + die2)
    print('Roll #', cnt, 'was', x)
    return x

def total_bank(bank):
    bet = 0
    while bet <= 0 or bet > min([500,bank]):
        print(f'You have ${bank} in your bank.')
        get_bet = input('Enter your bet (or 0 to quit): ')
        bet = int(get_bet)
        if get_bet == '0': 
            print('Thanks for playing!')
            return bank, bet
        return bank, bet

def get_guess():
    guess = 0
    while (guess < 2 or guess > 12):
        try:
            guess = int(input('Choose a number between 2 and 12: '))
        except ValueError:
            guess = 0
    return guess

prog_info()
bank = 500
guess = get_guess
rcnt = 1

while rcnt < 4:
    rcnt = 0
    bank,bet = total_bank(bank)
    guess = get_guess()
    if guess == rollDice(rcnt+1):
        bank += bet * 2
    elif guess == rollDice(rcnt+2):
        bank += bet * 1.5
    elif guess == rollDice(rcnt+3):
        bank = bank
else:
    bank = bank - bet
    if bank == 0:
        print(f'You have ${bank} in your bank.')
        print('Thanks for playing!')

创建一个起始值为$ 500的“银行”（变量）。

询问玩家下注
必须为0（零）或更大，并且不能超过银行中当前的金额。

滚动2个骰子

如果玩家猜测与第一轮相符，则将下注金额加倍至“庄家”
如果玩家猜猜与第二轮相匹配，则将下注金额的1.5倍添加到“庄家”。
如果玩家猜测与第3轮相匹配，则将下注金额添加到银行。 -如果玩家猜测与任何掷骰不符，则从“庄家”中减去下注。

让玩家继续玩，直到他们输入“ 0”（零）作为下注，或者当他们的下注达到“ 0”（零）时。

不使用BREAK或EXIT（）

Answer 1

0支票应致电exit

    if get_bet == '0': 
        print('Thanks for playing!')
        exit()

如果您不想使用exit或break，则需要使用条件退出主循环

更新total_bank

  if get_bet == '0': 
      print('Thanks for playing!')
  return bank, bet

更新主循环

bet = 1  # to start loop

while rcnt < 4 and bet: # exit loop if bet=0
   rcnt = 0
   bank,bet = total_bank(bank)
   if not bet: continue  # exit game if bet = 0
   guess = get_guess()
   if guess == rollDice(rcnt+1):
       bank += bet * 2
   elif guess == rollDice(rcnt+2):
      bank += bet * 1.5
   elif guess == rollDice(rcnt+3):
       bank = bank
else:
   if bet:  # bet = 0 if game end
       bank = bank - bet
       if bank == 0:
           print(f'You have ${bank} in your bank.')
           print('Thanks for playing!')

Answer 2

您要返回

while rcnt < 4:
    rcnt = 0
    bank,bet = total_bank(bank)
    guess = get_guess()
    if guess == rollDice(rcnt+1):
        bank += bet * 2
    elif guess == rollDice(rcnt+2):
        bank += bet * 1.5
    elif guess == rollDice(rcnt+3):
        bank = bank

从total_bank(bank):内部循环中断后

您可以通过如下修改修改bet == 0时中断的主循环

while rcnt < 4:
    rcnt = 0
    bank,bet = total_bank(bank)
    if bet==0 :
       break;
    guess = get_guess()
    if guess == rollDice(rcnt+1):
        bank += bet * 2
    elif guess == rollDice(rcnt+2):
        bank += bet * 1.5
    elif guess == rollDice(rcnt+3):
        bank = bank

编辑-做到不间断。

在执行循环之前检查bet！= 0。只需将赌注初始化为零以外的任何值。

bet=1
while (rcnt < 4) and (bet!=0):
    rcnt = 0
    bank,bet = total_bank(bank)
    guess = get_guess()
    if guess == rollDice(rcnt+1):
        bank += bet * 2
    elif guess == rollDice(rcnt+2):
        bank += bet * 1.5
    elif guess == rollDice(rcnt+3):
        bank = bank

Answer 3

要获得所需输出的第一行，请将打印语句更改为

print('You have ${} in your bank.'.format(bank))

循环继续循环，即使在终止消息之后

3 个答案: