时期 库，用于为具有1位128x64显示屏和电池的手表编写应用程序。 import period period . on_start def on_start (): period . graphics . alert ( text = 'Hello, world' ) period . on_tick def on_frame (): period . draw . rectangle ( xy = ( 0 , 0 , 10 , 10 ), fill = True )