does anyone know how to do keyboard presses in pygame. i have tried all that i can think of

Question

the r or the escape press isn't when i press esc it shuts down and gives an error (AttributeError: 'Event' object has no attribute 'KEY') i cant figur out why it gives that error. and the r press just isn't working

    collision = iscollision(player_x, player_y, apple_x, apple_y)
      if collision:
          game_over(over_x, over_y)
          if event.type == pygame.KEYDOWN:
              if event.key == pygame.K_ESCAPE:
                  run = False
              if event.KEY == pygame.K_r:
                  score = 0
                  apple_speed = 0.05
                  apple_x = random.randint(0, 550)
                  apple_y = random.randint(0, 500)