Bool 被正确返回，但仍然无法正常工作

Question

我想检查用户的输入并检查输入是否被接受。该方法称为“ check_input”，我在“ running”方法的第三行中称为此方法。我给它传递了一个字符串和布尔变量。然后我想返回 inputAccepted 值，然后根据它的值对它做一些事情。我已经使用了断点，并且bool本身已正确更改，但是当代码离开'check_input'方法时，bool'inputAccepted'被遗忘了。我究竟做错了什么？我的理论是 bool 在方法之外无法访问？import randomimport collectionsimport recodeLength = 4guessesRemaining = 10inputAccepted = FalsewelcomeMessage = 'Welcome to Mastermind. Try and guess the code by using the following letters:\n\nA B C D E F \n\nThe code will NOT contain more than 1 instance of a letter.\n\nAfter you have entered your guess press the "ENTER" key.\nYou have a total of'print(welcomeMessage, guessesRemaining, 'guesses.\n')def gen_code(codeLength):    symbols = ('ABCDEF')    code = random.sample(symbols, k=codeLength)    return str(code)code = gen_code(codeLength)print(code)counted = collections.Counter(code)def check_input(guess, inputAccepted):    if not re.match("[A-F]", guess): #Only accepts the letters from A-F        print("Please only use the letters 'ABCDEF.'")        inputAccepted = False        return (guess, inputAccepted)    else:        inputAccepted = True        return (guess, inputAccepted)def running():    guess = input() #Sets the guess variable to what the user has inputted    guess = guess.upper() #Converts the guess to uppercase    check_input(guess, inputAccepted) #Checks if the letter the user put in is valid    print(guess)    print(inputAccepted)    if inputAccepted == True:        guessCount = collections.Counter(trueGuess)        close = sum(min(counted[k], guessCount[k]) for k in counted)        exact = sum(a == b for a,b in zip(code, guess))        close -= exact        print('\n','Exact: {}. Close: {}. '.format(exact,close))        return exact != codeLength    else:        print("Input wasnt accepted")

Answer 1

您需要查看的返回值check_input，而不是输入值。

inputAccepted = check_input(guess)

您也没有理由返回最初的猜测，因此我建议重写该函数check_input：

def check_input(guess):

    if not re.match("[A-F]", guess): #Only accepts the letters from A-F

        print("Please only use the letters 'ABCDEF.'")

        return False

    else:

        return True

Answer 2

您在函数check_input中使用“ inputAccepted”作为全局变量和形式参数，在定义函数check_input时更改参数名称，这可能会解决您的问题。