试图用Python 2.7填写空白测验，但程序并没有按照我想要的方式进行。 对于一个在线课程，我试图填写一个空白测验，要求用户选择一个难度，每个难度由5个问题组成。当用户猜对时，答案必须与正确答案一起显示，否则将提示用户再次回答。此程序不是按我希望的方式运

试图用Python 2.7填写空白测验，但程序并没有按照我想要的方式进行。

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对于一个在线课程，我试图填写一个空白测验，要求用户选择一个难度，每个难度由5个问题组成。当用户猜对时，答案必须与正确答案一起显示，否则将提示用户再次回答。此程序不是按我希望的方式运行，就是有bug，我认为这可能会有所帮助。代码有点变了

print 'Welcome to General Quiz, a quiz where you are asked to select from three difficulty levels, with each level containing 5 fill in the blank questions'
print ''
print 'Rules:'
print '- These questions will be general knowledge based'
print '- Your score, which will be shown in the end, will be based on how many correct answers you get compared to the number of guesses you take' 
print '- It will not matter if you type anything lower or upper case'
print '- Some answers will require multiple words, so make sure you include spaces'
print '- For numbered answers, sumbit answers in numbers, not words'
print'' # These past few lines simply print out the rules for the user when they play this game

levelselect = 'no'# This variable will only set a condition for the following while loop

while levelselect == 'no':

    print ''
    level = raw_input ('Please select a difficulty (easy, medium, or hard): ').lower()# Prompts the user to select a difficulty and makes all letters lower case so it won't matter what case the user types in their input
    if level == 'easy' or level == 'medium' or level == 'hard':

        break # If the user's input is one of these three words, the program will break out of this loop, regardless of the value of the variable 'levelselect'

guesses = 0 # Used to record the number of guesses from the user to be displayed at the end of the game
score = 0 # Used to record the number of correct guesses the user gets correct later on in the game

print''

easy_questions = ['The chemical symbol (O) means _____',
                 '_____  is the best hockey player of all time',
                 '_____ is the year Canada became an independant country',
                 'The song "Sorry" was sung by _____',
                 'Steve Jobs is one the founders of  _____ ']
medium_questions = ['_____ is Canadas very first capital',
                 'The national team of _____ won the 2014 world cup',
                 'In a computer, RAM stands for _____',
                 'Your kidneys and your _____ are the organs that filter blood in your body',
                 'In Breaking Bad, the wife of Walter is _____ White']
hard_questions = ['In NASAs apollo program, _____ of their missions successfully landed men on the moom',         
                 '_____ was the year the NFL was founded',
                 'The first film to gross over one $1 billion is _____',
                 '_____ is the business with the worlds largest revenue',
                 'Lego was invented in the country of _____'] # This array contains all the answers with the blanks that are to be filled in

easy_answers = ['oxygen', 'wayne gretzky', '1867', 'justin bieber',
               'apple']
medium_answers = ['kingston', 'germany', 'random access memory',
                'liver', 'skyler']
hard_answers = ['6', '1920', 'titanic', 'walmart', 'denmark'] # This array contains all the answers, with corresponding indexes to the previous array

if level == 'easy':
    questions = easy_questions
    answers = easy_answers

elif level == 'medium':
    questions = medium_questions
    answers = medium_answers

elif level == 'hard':
    questions = hard_questions
    answers = hard_answers

totalQuestions = 5 # The questions array contains 15 questions, with the first 5 being easy, the next 5 being medium etc. and this helps to identify the finishing point of the asking of questions
questionNum = 0

def check_answer(user_answer, system_question, system_answer):

    if user_answer == system_answer:
        return ''
        return ('Correct!')
        return system_question.replace ('_____', system_answer) # Shows question with the blank filled with the correct answer
        score += 1 # Increases user's score by 1
        guesses += 1 # Increases user's guesses by 1
        questionNum += 1 # Makes the code in this while loop move onto the next question in the questions array and the next answer in the answers array

    else:
        return ''
        return ('Incorrect, Try Again')
        guesses += 1

while questionNum < totalQuestions:
    Question = questions[questionNum]
    Answer = answers[questionNum]

    print ''
    answer = raw_input (Question + ': ').lower() # Prompts the user to answer the fill in the blank question

    print check_answer(answer, Question, Answer)

print ''
print ('Congratulations, you have completed the ' + str(level) + ' level, with a score of ' +
       str(score) + ' out of ' + str(guesses) + ' guesses') 

由于您没有说明它的性能与预期的不同，或者这些所谓的bug是什么，我不确定我们应该如何帮助您。您不能在函数check_答案中多次使用return，至少您是如何使用的，您想改为使用print吗？

print '''Welcome to General Quiz, a quiz where you are asked to select from three difficulty levels, with each level 
containing 5 fill in the blank questions'             
\nRules:
\n- These questions will be general knowledge based
\n- Your score, which will be shown in the end, will be based on how many correct 
answers you get compared to the number of guesses you take 
\n- It will not matter if you type anything lower or upper case print
\n- Some answers will require multiple words, so make sure you include spaces
\n- For numbered answers, sumbit answers in numbers, not words'''
level=None
while level not in ['easy', 'medium', 'hard']:
    level = raw_input ('Please select a difficulty (easy, medium, or hard): ').lower()
guesses, score = 0, 0
questions = ['The chemical symbol (O) means _____',
             '_____  is the best hockey player of all time',
             '_____ is the year Canada became an independant country',
             'The song "Sorry" was sung by _____',
             'Steve Jobs is one the founders of  _____ ',
             '_____ is Canadas very first capital',
             'The national team of _____ won the 2014 world cup',
             'In a computer, RAM stands for _____',
             'Your kidneys and your _____ are the organs that filter blood in your body',
             'In Breaking Bad, the wife of Walter is _____ White',
             'In NASAs apollo program, _____ of their missions successfully landed men on the moom',
             '_____ was the year the NFL was founded',
             'The first film to gross over one $1 billion is _____',
             '_____ is the business with the worlds largest revenue',
             'Lego was invented in the country of _____']
answers = ['oxygen', 'wayne gretzky', '1867', 'justin bieber', 'apple', 'kingston', 'germany', 'random access memory',
           'liver', 'skyler', '6', '1920', 'titanic', 'walmart', 'denmark']

dict = {'easy':0, 'medium':5, 'hard':10}
for i in xrange(dict[level], dict[level]+5):
    answer = raw_input(questions[i] + ': ').lower()
    while(answer != answers[i]):
        print('Incorrect, Try Again')
        guesses = guesses+1
        answer = raw_input(questions[i] + ': ').lower()
    print('Correct \n'+ questions[i].replace('_____',answer))
    score, guesses = score + 1, guesses+1

print ('Congratulations, you have completed the ' + str(level) + ' level, with a score of ' +
   str(score) + ' out of ' + str(guesses) + ' guesses')