在两种情况下正确中断while循环

Question

我正在创建一个 python 脚本，提示用户猜测密码是什么，他们有 6 次尝试这样做。 我注意到，当我在用户正确猜测数字时运行程序时，while 循环中的最后一个 else 语句重复了两次，我不明白为什么。 我希望当用户正确猜出数字并打印语句以及尝试次数超过 6 并且用户没有正确猜出数字时，while 循环中断

def guessing_game(secret_number: int, user_guess: int):
  num_tries: int = 0
  user_name: str = input("Please enter your name: ")
  print(f"Hello {user_name}, i am thinking of a number between 1 and 20")
  secret_number: int = randint(1, 20)
  user_guess: int = int(input("Guess what it is: "))
  while num_tries != 6:
    if user_guess > secret_number:
        user_guess = int(input("Your guess is too high. Try again: "))
    elif user_guess < secret_number:
        user_guess = int(input("Your guess is too low. Try again: "))
    else:
        print(f"Congrats {user_name}, {secret_number} was the number i was thinking of")
    num_tries += 1
if user_guess != secret_number and num_tries == 6:
    print(f"The number I was thinking of was {secret_number}")

Answer 1

要在 Python 中留下一个循环，可以使用break指令。 以下是如何在您的代码中使用它：

def guessing_game(secret_number: int, user_guess: int):
  num_tries: int = 0
  user_name: str = input("Please enter your name: ")
  print(f"Hello {user_name}, i am thinking of a number between 1 and 20")
  secret_number: int = randint(1, 20)
  user_guess: int = int(input("Guess what it is: "))
  while num_tries != 6:
    if user_guess > secret_number:
        user_guess = int(input("Your guess is too high. Try again: "))
    elif user_guess < secret_number:
        user_guess = int(input("Your guess is too low. Try again: "))
    else:
        print(f"Congrats {user_name}, {secret_number} was the number i was thinking of")
        break
    num_tries += 1
if user_guess != secret_number and num_tries == 6:
    print(f"The number I was thinking of was {secret_number}")

但是，您应该删除在 function 中定义的参数user_guess和secret_number 。 要么将它们用作 function 的参数，要么将它们定义到 function 中。

Answer 2

我对它进行了一些重组。 如果您正确定义条件，则无需休息。 在这里，我们等到玩家猜到或计数太高。 完全如你所愿。 它在两个条件之一下结束。

import random
num_tries = 0
guessed = False

user_name: str = input("Please enter your name: ")
print(f"Hello {user_name}, i am thinking of a number between 1 and 20")
secret_number: int = random.randint(1, 20)

user_guess: int = int(input("Guess what it is: "))
while num_tries < 6 and not guessed:
    if user_guess > secret_number:
        user_guess = int(input("Your guess is too high. Try again: "))
    elif user_guess < secret_number:
        user_guess = int(input("Your guess is too low. Try again: "))
    else:
        guessed = True
        print(f"Congrats {user_name}, {secret_number} was the number i was thinking of")
    num_tries += 1

if not guessed:
    print(f"The number I was thinking of was {secret_number}")