Question

问题在于：我的while循环没有重复，它只是在Python启动器中返回一个空白行并且不会继续执行代码，我添加了一个打印功能at at最后检查它是否刚刚跳过。我使用了几种方法来重复代码，例如def merge[A](l: List[A])(implicit m: Monoid[A]) = l.foldLeft(m.zero)(m.append) merge(List(Bar(2), Bar(4), Bar(2))) res: Bar = Bar(10)和While True:，所以我开始认为代码中的其他地方存在问题。有问题的代码是：

While 0 == 0

This当我尝试重复时会发生什么我非常感谢帮助，我只想说我是编码的新手，所以我知道它可能不会被优化，但是如果评论说我如何优化它会有所帮助。

在开始时，变量定义如下：

while True:
 while i <= dice_amount:
   dice_output = random.randint(0,dice_range)
   print("dice number ", i, " is ", dice_output)
   i +=1
 while input_answer == "unknown":
   input_answer = input("would you like to throw the dice again? Y/N")
   if input_answer == "N":
    time.sleep(2)
    os.exit
   elif input_answer != "Y":
    input_answer = "unknown"

print("code is broken") #to see if code just skips loop

Answer 1

你需要在＆＃34;和＃34;之后将i设置为1，并将input_answer设置为＆＃34; unknown＆＃34;在第二个内循环之前。更正后的代码：

while True:
 i = 1
 while i <= dice_amount:
   dice_output = random.randint(0,dice_range)
   print("dice number ", i, " is ", dice_output)
   i +=1
 input_answer = "unknown"
 while input_answer == "unknown":
   input_answer = input("would you like to throw the dice again? Y/N")
   if input_answer == "N":
    time.sleep(2)
    os.exit
   elif input_answer != "Y":
    input_answer = "unknown"

print("code is broken") #to see if code just skips loop

Answer 2

我终于意识到了这个问题，在阅读了其他评论和答案之后，我想出了这个问题。首先，我意识到如果没有任何答案是Y或N，我不需要使用input_answer，我只是使它成为重复循环，如果既不是Y也不是N它只是重复了问题，Y打破了循环， N结束程序。如果答案是Y，我加上i = 1，以便重复。

这是固定代码：

import random
import time
dice_amount = int(input("how many times would you like to roll the dice?"))
dice_range = int(input("how many numbers would you like on the dice?"))
i = 1

while True:
 while i <= dice_amount:
   dice_output = random.randint(0,dice_range)
   print("dice number ", i, " is ", dice_output)
   i +=1
 while True:
   input_answer = input("would you like to throw the dice again? Y/N")
   if input_answer == "N":
    time.sleep(2)
    os.exit
   elif input_answer == "Y":
    i = 1
    break

＆＃34;而真实：＆＃34;循环后，循环返回任何内容

2 个答案: