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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def stop(self):

 """Stops a a playing animation. A subsequent call to play will start from the beginning."""

        if self.state == PygAnimation.PLAYING:
            self.index = 0  # set up for first image in list
            self.elapsed = 0
            self.nIterationsLeft = 0

        elif self.state == PygAnimation.STOPPED:
            pass  # nothing to do

        elif self.state == PygAnimation.PAUSED:
            self.index = 0  # set up for first image in list
            self.elapsed = 0

        self.state = PygAnimation.STOPPED