Memory Game in Python

import pygame
import random

pygame.init()
background_colour = (255,255,255)
(width, height) = (640, 480)
screen = pygame.display.set_mode((width, height))
pygame.display.set_caption('The BGR Game')
screen.fill(background_colour)
pygame.display.flip()
running = True

# COLORS
BLUE = (0,0,255)
LIGHT_BLUE = (65,105,225)
GREEN = (0,255,0)
LIGHT_GREEN = (0,204,102)
RED = (255,0,0)
LIGHT_RED = (228,113,122)
BLACK = (0,0,0)
WHITE = (255,255,255)

CENTER_WINDOW_H = 480/2

total_good = 0
total_bad = 0

font1 = pygame.font.Font('tahoma.ttf', 32)
start_text = font1.render('Press [SPACE] to start', True, BLACK, WHITE)
good_text = font1.render("Good Answers: ", True, BLACK, WHITE)
bad_text = font1.render("Bad Answers: ", True, BLACK, WHITE)
start_text_rect = start_text.get_rect()
good_text_rect = start_text.get_rect()
bad_text_rect = start_text.get_rect()
start_text_rect.center = (640 // 2, 350)
good_text_rect.center = (640 // 2, 50)
bad_text_rect.center = (640 // 2, 100)

click = False
press_space = False

timeA = 0
timeB = 0

counter = 0

stage = 1
limit = 0
good_clicks = 0
num_click = 0
random_num = 0

list1 = [1]


while running:
  for event in pygame.event.get():
    if event.type == pygame.QUIT:
      running = False
    elif event.type == pygame.KEYDOWN:
        if event.key == pygame.K_SPACE or event.key == pygame.K_UP:
            if stage == 1:
              print("PRESS START!")
              stage = 2
    if event.type == pygame.MOUSEBUTTONUP:
      if stage == 3:
        if x > 640 / 4 - 25 and x < 640 / 4 + 25 and y > CENTER_WINDOW_H - 25 and y < CENTER_WINDOW_H + 25:
          if list1[num_click] == 1:
            print("GOOD")
            total_good += 1
          else:
            print("BAD")
            total_bad += 1
          num_click += 1
        if x > (640 / 4) * 2 - 25 and x < (640 / 4) * 2 + 25 and y > CENTER_WINDOW_H - 25 and y < CENTER_WINDOW_H + 25:
          if list1[num_click] == 2:
            print("GOOD")
            total_good += 1
          else:
            print("BAD")
            total_bad += 1
          num_click += 1
        if x > (640 / 4) * 3 - 25 and x < (640 / 4) * 3 + 25 and y > CENTER_WINDOW_H - 25 and y < CENTER_WINDOW_H + 25:
          if list1[num_click] == 3:
            print("GOOD")
            total_good += 1
          else:
            print("BAD")
            total_bad += 1
          num_click += 1
        if num_click == limit:
          num_click = 0
          click = False
          stage = 1


  # GET MOUSE POSITION
  x, y = pygame.mouse.get_pos()
  # print(x, y)

  # TIMER
  timeA = pygame.time.get_ticks()
  # print(timeA)

  # BACKGROUND
  pygame.draw.rect(screen, WHITE, pygame.Rect(0, 0, 640, 480))

  if stage == 2:
    if timeA - timeB < 1000:
      pygame.draw.rect(screen, LIGHT_BLUE, pygame.Rect(640 / 4 - 25, CENTER_WINDOW_H - 25, 50, 50))
      pygame.draw.rect(screen, LIGHT_GREEN, pygame.Rect((640/4) * 2 - 25, CENTER_WINDOW_H - 25, 50, 50))
      pygame.draw.rect(screen, LIGHT_RED, pygame.Rect((640 / 4) * 3 - 25, CENTER_WINDOW_H - 25, 50, 50))
    if timeA - timeB > 999 and timeA - timeB < 2000:
      if list1[counter] == 1:
        pygame.draw.rect(screen, BLUE, pygame.Rect(640 / 4 - 25, CENTER_WINDOW_H - 25, 50, 50))
        pygame.draw.rect(screen, LIGHT_GREEN, pygame.Rect((640 / 4) * 2 - 25, CENTER_WINDOW_H - 25, 50, 50))
        pygame.draw.rect(screen, LIGHT_RED, pygame.Rect((640 / 4) * 3 - 25, CENTER_WINDOW_H - 25, 50, 50))
      if list1[counter] == 2:
        pygame.draw.rect(screen, LIGHT_BLUE, pygame.Rect(640 / 4 - 25, CENTER_WINDOW_H - 25, 50, 50))
        pygame.draw.rect(screen, GREEN, pygame.Rect((640/4) * 2 - 25, CENTER_WINDOW_H - 25, 50, 50))
        pygame.draw.rect(screen, LIGHT_RED, pygame.Rect((640 / 4) * 3 - 25, CENTER_WINDOW_H - 25, 50, 50))
      if list1[counter] == 3:
        pygame.draw.rect(screen, LIGHT_BLUE, pygame.Rect(640 / 4 - 25, CENTER_WINDOW_H - 25, 50, 50))
        pygame.draw.rect(screen, LIGHT_GREEN, pygame.Rect((640 / 4) * 2 - 25, CENTER_WINDOW_H - 25, 50, 50))
        pygame.draw.rect(screen, RED, pygame.Rect((640 / 4) * 3 - 25, CENTER_WINDOW_H - 25, 50, 50))
    if timeA - timeB > 1999:
      counter += 1
      if counter == limit:
        random_num = random.randint(1, 3)
        list1.append(random_num)
      timeB = timeA
      # print(counter)
    if counter > limit:
      print(list1)
      stage = 3
      click = True
      counter = 0
      limit += 1

  # UPDATE AND PRINT GOOD ANSWERS
  good_text = font1.render("Good Answers: " + str(total_good), True, BLACK, GREEN)
  screen.blit(good_text, good_text_rect)

  # UPDATE AND PRINT BAD ANSWERS
  bad_text = font1.render("Bad Answers: " + str(total_bad), True, BLACK, RED)
  screen.blit(bad_text, bad_text_rect)

  if stage == 1:
    screen.blit(start_text, start_text_rect)
    timeB = timeA

  # PLAYER'S TURN
  if stage == 1 or stage == 3:
    if x > 640/4 - 25 and x < 640/4 + 25 and y > CENTER_WINDOW_H-25 and y < CENTER_WINDOW_H + 25 and click == True:
      pygame.draw.rect(screen, BLUE, pygame.Rect(640/4 - 25, CENTER_WINDOW_H-25, 50, 50))
    else:
      pygame.draw.rect(screen, LIGHT_BLUE, pygame.Rect(640 / 4 - 25, CENTER_WINDOW_H - 25, 50, 50))

    if x > (640/4)*2 - 25 and x < (640/4)*2 + 25 and y > CENTER_WINDOW_H - 25 and y < CENTER_WINDOW_H + 25 and click == True:
      pygame.draw.rect(screen, GREEN, pygame.Rect((640/4) * 2 - 25, CENTER_WINDOW_H-25, 50, 50))
    else:
      pygame.draw.rect(screen, LIGHT_GREEN, pygame.Rect((640 / 4) * 2 - 25, CENTER_WINDOW_H - 25, 50, 50))

    if x > (640/4)*3 - 25 and x < (640/4)*3 + 25 and y > CENTER_WINDOW_H - 25 and y < CENTER_WINDOW_H + 25 and click == True:
      pygame.draw.rect(screen, RED, pygame.Rect((640/4) * 3 - 25, CENTER_WINDOW_H-25, 50, 50))
    else:
      pygame.draw.rect(screen, LIGHT_RED, pygame.Rect((640 / 4) * 3 - 25, CENTER_WINDOW_H - 25, 50, 50))

  pygame.display.flip()