Python精灵模块的reborn指令

from sprites import Sprite,Screen

screen = Screen()
screen.setup(480,360)

bug = Sprite()
while True:
    bug.fd(1)
    if bug.xcor()>240:
        # 到了最右边，则1秒后从左边出现
        bug.reborn(-240,0,delay=1)
    bug.wait(0.01)