预览：在我们开始制作我们的第一个程序之前，让我们看一个例子。
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stage.set_background("schoolentrance")
sprite = codesters.Sprite("person2_masked")
sprite.glide_to(-200, -170)
sprite = codesters.Sprite("person3_masked")
sprite.glide_to(200, -155)
sprite = codesters.Sprite("person7_masked")
sprite.set_speed(2)
sprite.move_down(120)
stage.wait(1)
sprite.set_say_color("brown")
sprite.say("Click on me!")
def click():
sprite.say("Remember to social distance!")
sprite.move_up(100)
sprite.turn_right(360)
sprite.move_down(100)
sprite.say("Stay healthy and wear a mask!")
sprite.set_y_speed(5)
sprite.event_click(click)
