code: def play(self):
          
          if self.state == PygAnimation.PLAYING:
              pass  # nothing to do
  
          elif self.state == PygAnimation.STOPPED:  # restart from beginning of animation
              self.index = 0  # first image in list
              self.elapsed = 0
              self.playingStartTime = time.time()
              self.elapsedStopTime = self.endTimesList[-1]  # end of last animation image time
              self.nextElapsedThreshold = self.endTimesList[0]
              self.nIterationsLeft = self.nTimes  # typically 1
  
          elif self.state == PygAnimation.PAUSED:  # restart where we left off
              self.playingStartTime = time.time() - self.elapsedAtPause  # recalc start time
              self.elapsed = self.elapsedAtPause
              self.elapsedStopTime = self.endTimesList[-1]  # end of last animation image time
              self.nextElapsedThreshold = self.endTimesList[self.index]
  
          self.state = PygAnimation.PLAYING
docs: Starts an animation playing.