循环继续循环，即使在终止消息之后

Question

我在让 user input 在终止消息后停止循环时遇到了一些问题。基本上，在 Enter bet 字段中输入 0 (zero) 后，程序必须打印终止消息并结束。但是，它会在应该跳过时通过询问下一行输入 "Choose a number between 2 and 12" 来继续循环。我知道 break 或 exit() 可以解决我的问题，但这些都不是可接受的解决方案。在 Enter bet 字段中输入 0 (zero) 后，我需要它来完成并打印终止消息。不继续执行程序。

示例需要输出：

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

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 美元的“银行”（变量）。

要求玩家下注
必须为 0（零）或更大，并且不能超过当前银行中的金额。

掷 2 个骰子

如果玩家猜对了第一卷，则将双倍的赌注加到“银行”
如果玩家猜对了第二次掷骰，则将下注金额的 1.5 倍添加到“银行”。
如果玩家猜对了第 3 卷，则将下注金额添加到银行。 -如果玩家猜测没有匹配任何掷骰，则从“银行”中减去赌注。

让玩家继续玩，直到他们输入“0”（零）作为赌注，或者当他们的银行达到“0”（零）时。

不使用 BREAK 或 EXIT()

Answer 1

0 检查应该调用 exit

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

如果您不想使用 exit 或 break，您需要使用条件

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

您将回到

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):

中的循环中断开后

你可以通过如下修改主循环来修改 if bet==0 break

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 - 不间断地进行。

在执行循环前检查是否 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

to get your first line of needed output change your print statement to

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

循环继续循环，即使在终止消息之后

Loop continues looping, even after termination message

python

printing

input

python-3.8