Приложение-викторина Python tkinter, правильные ответы показаны как неправильные

Я новичок в Python и Tkinter. Я создал базовое приложение-викторину для проекта в колледже, которое отображает случайные 10 вопросов из набора из 30 вопросов.

В словаре ВОПРОСЫ каждый вопрос имеет 4 ответа, первый из которых является правильным. В функцииgenerate_quiz() на каждый вопрос правильный ответ перемешан среди трех других. В конце викторины сбрасывает все при возврате в главное меню. При выборе правильных ответов в 1-м туре викторина проходит гладко, но когда я перезапускаю викторину и выбираю те же правильные ответы, они отображаются как неправильные. Это происходит только с вопросами, которые являются общими с вопросами предыдущего раунда, в новых вопросах такой проблемы нет.

Любая помощь будет принята с благодарностью!

Вот весь код:

from tkinter import *
import random

QUESTIONS = {
    "What is the capital of France?": ["Paris", "London", "Berlin", "Madrid"],
    "Who wrote 'To Kill a Mockingbird'?": ["Harper Lee", "Mark Twain", "Jane Austen", "J.K. Rowling"],
    "What is the largest planet in our solar system?": ["Jupiter", "Mars", "Earth", "Venus"],
    "What is the chemical symbol for water?": ["H2O", "CO2", "O2", "NaCl"],
    "Who was the first president of the United States?": ["George Washington", "Thomas Jefferson", "Abraham Lincoln", "John Adams"],
    "What is the square root of 64?": ["8", "6", "7", "9"],
    "Who painted the Mona Lisa?": ["Leonardo da Vinci", "Vincent van Gogh", "Pablo Picasso", "Claude Monet"],
    "What is the longest river in the world?": ["Nile", "Amazon", "Yangtze", "Mississippi"],
    "What is the smallest country in the world?": ["Vatican City", "Monaco", "Nauru", "San Marino"],
    "What is the fastest land animal?": ["Cheetah", "Lion", "Tiger", "Leopard"],
    "Who discovered penicillin?": ["Alexander Fleming", "Marie Curie", "Louis Pasteur", "Isaac Newton"],
    "What is the hardest natural substance on Earth?": ["Diamond", "Gold", "Iron", "Silver"],
    "What is the capital of Japan?": ["Tokyo", "Beijing", "Seoul", "Bangkok"],
    "Who wrote '1984'?": ["George Orwell", "Aldous Huxley", "Ray Bradbury", "J.R.R. Tolkien"],
    "What is the chemical symbol for gold?": ["Au", "Ag", "Pb", "Fe"],
    "What is the tallest mountain in the world?": ["Mount Everest", "K2", "Kangchenjunga", "Lhotse"],
    "What is the main ingredient in guacamole?": ["Avocado", "Tomato", "Onion", "Garlic"],
    "Who is known as the father of computers?": ["Charles Babbage", "Alan Turing", "John von Neumann", "Bill Gates"],
    "What is the largest ocean on Earth?": ["Pacific Ocean", "Atlantic Ocean", "Indian Ocean", "Arctic Ocean"],
    "What is the speed of light?": ["299,792,458 meters per second", "150,000,000 meters per second", "186,282 miles per second", "300,000,000 meters per second"],
    "Who painted the ceiling of the Sistine Chapel?": ["Michelangelo", "Raphael", "Leonardo da Vinci", "Donatello"],
    "What is the capital of Australia?": ["Canberra", "Sydney", "Melbourne", "Brisbane"],
    "Who wrote 'Pride and Prejudice'?": ["Jane Austen", "Charlotte Bronte", "Mary Shelley", "Emily Dickinson"],
    "What is the chemical symbol for oxygen?": ["O", "O2", "Ox", "Og"],
    "What is the largest mammal in the world?": ["Blue Whale", "Elephant", "Giraffe", "Hippopotamus"],
    "What is the smallest bone in the human body?": ["Stapes", "Femur", "Tibia", "Fibula"],
    "Who invented the telephone?": ["Alexander Graham Bell", "Thomas Edison", "Nikola Tesla", "Guglielmo Marconi"],
    "What is the primary language spoken in Brazil?": ["Portuguese", "Spanish", "French", "English"],
    "What is the result of 1 + 1?": ["2", "3", "1", "0"],
    "What is the capital of Canada?": ["Ottawa", "Toronto", "Vancouver", "Montreal"]
}

MAX_SCORE = 10   
questions = random.sample(list(QUESTIONS.items()), 10)
score = 0
message_label = None
answer_selected = None

# Defining all functions

def display_frame(frame):
  frame.tkraise()  

def create_welcome_frame():
  welcome_frame = Frame(container, bg = 'gray12')
  welcome_frame.grid(row = 0, column = 0, sticky = 'nsew')

  title_label = Label(welcome_frame, text = "QuizApp", font = ('Arial', 24), fg = 'white', bg = 'gray12')
  title_label.pack(fill = X, pady = 30)

  welcome_label = Label(welcome_frame, text = 'Welcome to QuizApp! Press the \'Start\' button to begin the quiz.', font = ('Arial', 20), fg = 'white', bg = 'gray12', pady = 40)
  welcome_label.pack(pady = 20)

  start_button = Button(welcome_frame, text = 'Start', font = ('Arial', 24), fg = 'white', bg = 'SpringGreen2', padx = 20, pady = 20, command = generate_quiz_frame)
  start_button.pack(pady = (60, 0))

  return welcome_frame

def create_quiz_frame():
  quiz_frame = Frame(container, bg = 'gray12')
  quiz_frame.grid(row = 0, column = 0, sticky = 'nsew')

  return quiz_frame

def generate_quiz():
  global questions, answer_selected

  if questions:
    global question

    question, answers = questions.pop(0)
    correct_answer = answers[0]

    question_label = Label(quiz_frame, text = question, font = ('Arial', 25), fg = 'white', bg = 'gray12', pady = 40)
    question_label.pack(anchor = W, padx = (200, 0))

    random.shuffle(answers)

    for answer in answers:
      answer_selected = False

      answer_button = Button(quiz_frame, text = answer, width = 30, pady = 17, font = ('Arial', 19), command = lambda chosen_answer = answer: display_quiz_message(chosen_answer, correct_answer))
      answer_button.pack(anchor = W, padx = (200, 0), pady = 10)
  else:
    display_frame(results_frame)
    update_results_frame()

def display_quiz_message(chosen_answer, correct_answer):
  global message_label, score, answer_selected

  if not answer_selected:

    if message_label:
      message_label.destroy()

    message = ''
    message_color = ''
    answer_selected = True

    if chosen_answer == correct_answer:
      message = 'You got it correct!'
      message_color = 'SpringGreen3'
      score += 1
    else:
      message = 'You got it wrong...'
      message_color = 'red2'

    message_label = Label(quiz_frame, text = message, font = ('Arial', 20), fg = message_color, bg = 'gray12')
    message_label.pack(anchor = W, padx = (200, 0))

    next_button = Button(quiz_frame, text = 'Next', font = ('Arial', 15), command = lambda: clear_frame(quiz_frame))
    next_button.pack(anchor = W, padx = (200, 0), pady = (20,0))
  else:
    pass

def clear_frame(frame):
  for widget in frame.winfo_children():
    widget.destroy()

  generate_quiz()

def generate_quiz_frame():
  generate_quiz()
  display_frame(quiz_frame)

def create_results_frame():
  
  results_frame = Frame(container, bg = 'gray12')
  results_frame.grid(row = 0, column = 0, sticky = 'nsew')

  return results_frame

def update_results_frame():
  for widget in results_frame.winfo_children():
    widget.destroy()

  results_label = Label(results_frame, text = f"Your score: {score} / {MAX_SCORE}", font = ('Arial', 20), fg = 'white', bg = 'gray12', pady = 40)
  results_label.pack(anchor = CENTER)

  button = Button(results_frame, text = 'Back to main menu', font = ('Arial', 24), fg = 'white', bg = 'SpringGreen2', padx = 20, pady = 20, command = reset_quiz)
  button.pack(anchor = CENTER, pady = (60,0))

def reset_quiz():
  global questions, score, answer_selected
  questions = random.sample(list(QUESTIONS.items()), 10)
  score = 0
  answer_selected = None
  display_frame(welcome_frame)

# Main app window
master = Tk()
master.title('QuizApp')
master.config(bg = 'gray12')

# Container for all frames
container = Frame(master, bg = 'gray12')
container.pack(fill = BOTH, expand = True)

container.grid_rowconfigure(0, weight = 1)
container.grid_columnconfigure(0, weight = 1)

welcome_frame = create_welcome_frame()
quiz_frame = create_quiz_frame()
results_frame = create_results_frame()

display_frame(welcome_frame)

master.mainloop()

Я попытался исправить это с помощью Я попробовал закрыть и открыть VSCode.