code: def get_song_id(self, song_title):
          
          song = self.search(song_title)
  
          if song.get('hMusic', None):
              return song['hMusic']['dfsId'], song['hMusic']['bitrate']
          elif song.get('mMusic', None):
              return song['mMusic']['dfsId'], song['mMusic']['bitrate']
          elif song.get('lMusic', None):
              return song['lMusic']['dfsId'], song['lMusic']['bitrate']
          return None
docs: 根据歌名获取歌曲id