while循环没有被执行

Question

在此代码中，用户要猜测计算机在 0 到 100 之间随机选择的一个数字。问题是 while 循环根本没有执行。一切正常，直到我将该代码块放入 while 循环以使其重复，直到用户猜测数字或用完尝试为止。如何让 while 循环工作？我是 python 的初学者。

import random
def guessing_game():
    print('''Welcome to the Number Guessing Game!
I'm thinking of a number between 1 and 100.''')

    select_level = input("Choose a difficulty. Type 'easy' or 'hard': easy: ")
    if select_level == "easy":
        attempt_left = 10
        print("You have 10 attempts remaining to guess the number.")
    elif select_level == "hard":
        attempt_left = 5
        print("You have 5 attempts remaining to guess the number.")
    computer_choice = random.randint(0,100)
    #print(f"Pssst, the correct answer is {computer_choice}")

    number_guessed = False
    while number_guessed:
        user_choice = int(input("Please enter a number between 0 and 100: "))
        if computer_choice == user_choice:
            number_guessed = True
            print(f"You got it! The answer was {computer_choice}")
        else:
            attempt_left -= 1
            if user_choice > computer_choice:
                print(f"That is too high!\nGuess again.\nYou have {attempt_left} attempts remaining to guess the number.")
            else:
                print(f"That is too low!\nGuess again.\nYou have {attempt_left} attempts remaining to guess the number.")
            if attempt_left == 0:
                number_guessed = True
                print("You've run out of guesses, you lose.")
guessing_game()

Answer 1

这应该有效：

import random
def guessing_game():
    print('''Welcome to the Number Guessing Game!
I'm thinking of a number between 1 and 100.''')

    select_level = input("Choose a difficulty. Type 'easy' or 'hard': easy: ")
    if select_level == "easy":
        attempt_left = 10
        print("You have 10 attempts remaining to guess the number.")
    elif select_level == "hard":
        attempt_left = 5
        print("You have 5 attempts remaining to guess the number.")
    computer_choice = random.randint(0,100)
    #print(f"Pssst, the correct answer is {computer_choice}")

    number_guessed = False
    while number_guessed == False:
        user_choice = int(input("Please enter a number between 0 and 100: "))
        if computer_choice == user_choice:
            number_guessed = True
            print(f"You got it! The answer was {computer_choice}")
        else:
            attempt_left -= 1
            if user_choice > computer_choice:
                print(f"That is too high!\nGuess again.\nYou have {attempt_left} attempts remaining to guess the number.")
            else:
                print(f"That is too low!\nGuess again.\nYou have {attempt_left} attempts remaining to guess the number.")
            if attempt_left == 0:
                number_guessed = True
                print("You've run out of guesses, you lose.")
guessing_game()

你的代码的错误是，当你使用像 while somevariable 和 somevariable 等于 False 的 while 循环时，while 循环不会运行。你也可以试试 while not number_guessed

Answer 2

numbers_guessed为假，while循环必须为运行为真。所以改变while循环或变量。

代码：

import random
def guessing_game():
    print('''Welcome to the Number Guessing Game!
I'm thinking of a number between 1 and 100.''')

    select_level = input("Choose a difficulty. Type 'easy' or 'hard': easy: ")
    if select_level == "easy":
        attempt_left = 10
        print("You have 10 attempts remaining to guess the number.")
    elif select_level == "hard":
        attempt_left = 5
        print("You have 5 attempts remaining to guess the number.")
    computer_choice = random.randint(0,100)
    #print(f"Pssst, the correct answer is {computer_choice}")

    number_guessed = False
    while not number_guessed:
        user_choice = int(input("Please enter a number between 0 and 100: "))
        if computer_choice == user_choice:
            number_guessed = True
            print(f"You got it! The answer was {computer_choice}")
        else:
            attempt_left -= 1
            if user_choice > computer_choice:
                print(f"That is too high!\nGuess again.\nYou have {attempt_left} attempts remaining to guess the number.")
            else:
                print(f"That is too low!\nGuess again.\nYou have {attempt_left} attempts remaining to guess the number.")
            if attempt_left == 0:
                number_guessed = True
                print("You've run out of guesses, you lose.")
guessing_game()

Answer 3

你定义number_guessed为False，所以循环根本不执行。试试 while not number_guessed.

while循环没有被执行

while loop is not being executed

python

while-loop