Un quiz simple en python

J'écris un code Python pour percer un utilisateur en anglais et frais, en fonction de l'option, il vous poserait des questions en anglais ou en français et accepterait des réponses, elle vérifierait ensuite les réponses entrées dans une liste et incrémenter le score, Cependant, après la première question, mon code s'arrête en cours d'exécution

J'ai essayé d'inclure une boucle et de faire une partie de la fonction en boucle. Pourtant, rien P>

#Python program to drill a student in french
import sys
option = 0
score=0
english_questions=['What is Thank you in French___?', 'What is you are welcome in French___?', 'What is no in French___?', 'What is Pardon in French___?', 'What is yes in French?___?']
french_questions =['What does Merci mean in English___? ', 'What does derien mean in English___?','What does No mean in English___?', 'What does pardon mean in English___?', 'What does oui mean in English___?' ]
french_answers =['merci', 'derien', 'no', 'pardon', 'oui']
english_answers=['thankyou', 'welcome', 'no', 'pardon', 'yes']
number_of_questions = 5
question_number = 0
print('Welcome to English-French Vocabulary Drill')
print('*********************************************')
print('To be drilled in English Press 1')
print('To be drilled in French Press 2')
print('*********************************************')

#a try except block to handle invalid option type
if option not in (1, 2):
     try:
         option=input('Please Enter option:')
     except:
         print('Invalid option, Please enter 1 or 2')

if option == 1:
   questions = english_questions
   answers = french_answers
elif option == 2:
    questions = french_questions
    answers = english_answers
#Function to check answer
def check_answer(user_answer, questions, answers):
    if user_answer in answers:
        print('')
        print('Correct')
        global score
        score +=1 
        global question_number
        question_number +=1
    else:
        print('')
        print('Incorrect, try again')
        global guesses 
        guesses +=1

global number_of_questions
while question_number < number_of_questions: 
    x = questions[question_number]
    user_answer = answers[question_number]
    print('')
    user_answer = input (x + ':')
    print (check_answer(user_answer, x, answers))
    print('')
    print('score : ' +str(score) )