切换歌曲时刷新

def get_song(self):
        """
        切换歌曲时刷新
        """
        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