python 中的用户输入验证

发布于 2025-01-19 08:42:37 字数 729 浏览 2 评论 0原文

我已经玩了几个小时了，并且尝试了一些变体，但仍然一无所获，不确定我出了什么问题。我正在尝试将其做到，以便用户只能给出A，B或C的输入值。如果有人建议这样做，这将不胜感激。谢谢。

def run_quiz(questions):
    """
    Function loops through questions and checks answer given
    against correct answer. If correct answer given
    then score increases by 1.
    """
    score = 0
    for question in questions:
        answer = input(question.prompt)
        answer = answer.lower()
        if answer == question.answer:
            score += 1
            while answer not in {'a', 'b', 'c'}:
                return "Invalid answer, try again"
            else:
                return f"You guessed {answer}"

    print(f"{name} got {score} out of {str(len(questions))} questions correct")

原文

I've been playing about with this for a few hours now and have tried a few variations and am still getting nowhere and am not sure what I'm getting wrong. I'm trying to make it so users can only give input values of a, b or c. If anyone could advise that would be greatly appreciated. Thanks.

def run_quiz(questions):
    """
    Function loops through questions and checks answer given
    against correct answer. If correct answer given
    then score increases by 1.
    """
    score = 0
    for question in questions:
        answer = input(question.prompt)
        answer = answer.lower()
        if answer == question.answer:
            score += 1
            while answer not in {'a', 'b', 'c'}:
                return "Invalid answer, try again"
            else:
                return f"You guessed {answer}"

    print(f"{name} got {score} out of {str(len(questions))} questions correct")

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少女的英雄梦 2025-01-26 08:42:37

不需要这些 return 语句。

def run_quiz(questions):
    score = 0
    for question in questions:
        answer = input(question.prompt).lower()
        while answer not in {'a','b','c'}:
            answer = input("Invalid answer, try again").lower()
        if answer == question.answer:
            score += 1
            print("Correct")
        else:
            print("Incorrect")
    print(f"{name} got {score} out of {len(questions)} questions correct")

There's no need for those return statements.

def run_quiz(questions):
    score = 0
    for question in questions:
        answer = input(question.prompt).lower()
        while answer not in {'a','b','c'}:
            answer = input("Invalid answer, try again").lower()
        if answer == question.answer:
            score += 1
            print("Correct")
        else:
            print("Incorrect")
    print(f"{name} got {score} out of {len(questions)} questions correct")

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