code: def get_song(self):
          
          if self.playingsong:
              playingsong = copy.deepcopy(self.playingsong)
              rate_times = self.rate_times
              logger.info(playingsong['title'])
              self.after_play(playingsong, rate_times)
          self.playingsong = self.data.get_song()
          self.rate_times = 0
          return self.playingsong
docs: 切换歌曲时刷新