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from pgzrun import* WHDTH=1400 HEIGHT=800 b=Actor("bg.png") a=Actor("aduan.png") c=Actor("codemao.png") a.y=300 c.y=500 # 感谢你让阿短和编程猫滑起来啦~ # 可以自己加背景音乐哦：music.play("happy.mp3") def draw():   b.draw()   a.draw()   c.draw() def update():   a.x+=1   c.x+=1 go()