验证函数问题求助：实现1-10分数输入校验并用于列表追加

Hey there! Let's break down the issues in your current code and get that validation function working properly. Right now, it has a few bugs that are keeping it from correctly checking scores between 1 and 10—let's fix them one by one:

Key Issues in Your Original Code #

• Unused parameters: The goodNum and score parameters are immediately overwritten in the function, so they don't serve any purpose. We can remove them since you're collecting input directly inside the function.
• Critical assignment bug: goodNum == True is a comparison operator, not an assignment. This means goodNum never actually gets set to True, so your loop will run forever even with a valid score. You need to use goodNum = True here.
• Incomplete error handling: If the user enters a non-numeric value twice, your code will try to compare a string to an integer (e.g., checking if "abc" > 1), which throws an error. We need to ensure score is always an integer before checking its range.
• Incorrect range check: Your condition score > 1 and score < 11 excludes 1 and 10. Since you want scores between 1 and 10 (inclusive), use score >= 1 and score <= 10 instead.
• Redundant input prompts: You're repeating the raw_input call in the except block. We can refactor this to keep the input prompt in one place inside the loop for cleaner code.

Fixed Code (Python 2 Version) #

def validation():
    goodNum = False
    while not goodNum:
        score_input = raw_input("Please enter a valid score between 1 and 10: ")
        try:
            # Convert input to integer
            score = int(score_input)
            # Check if score is within the valid range
            if 1 <= score <= 10:
                goodNum = True
            else:
                print("Invalid score! Must be between 1 and 10.")
        except ValueError:
            # Handle non-integer inputs
            print("Invalid input! Please enter a whole number.")
    # Return the valid score to use for appending to your list
    return score

Fixed Code (Python 3 Version) #

If you're using Python 3, replace raw_input with input (since raw_input was renamed to input in Python 3):

def validation():
    goodNum = False
    while not goodNum:
        score_input = input("Please enter a valid score between 1 and 10: ")
        try:
            score = int(score_input)
            if 1 <= score <= 10:
                goodNum = True
            else:
                print("Invalid score! Must be between 1 and 10.")
        except ValueError:
            print("Invalid input! Please enter a whole number.")
    return score

How to Use It #

Now you can call this function to get a valid score and append it to your list like this:

score_list = []
valid_score = validation()
score_list.append(valid_score)

内容的提问来源于stack exchange，提问作者Finn Alan Fuller