Ошибка SyntaxError: 'return' outside function

while True:
 
    for event in pygame.event.get():

        if event.type == QUIT or (event.type == KEYDOWN and event.key == K_ESCAPE):
            pygame.quit()
            sys.exit()

        elif event.type == KEYDOWN and (event.key == K_SPACE or event.key == K_UP):
            return
        else:
            display_screen_window.blit(game_image['background'], (0, 0))
            display_screen_window.blit(game_image['player'], (p_x, p_y))
            display_screen_window.blit(game_image['message'], (msgx, msgy))
            display_screen_window.blit(game_image['base'], (b_x, play_ground))