def run_main(): size = width, height = 1280, 720 speed = [2, 2] black = 0, 0, 0 screen = pygame.display.set_mode(size) sf = StarField(size) fps = FPS() while 1: for event in pygame.event.get(): if event.type == pygame.QUIT: sys.exit() screen.fill(black) sf.do_things(screen) fps.show_fps(screen) pygame.display.flip()