获取单个歌曲

def get_daily_song(self, netease=False):
        """
        获取单个歌曲
        """
        if not self._daily_playlist:
            self.get_daily_songs()
            self._daily_playlist_index = 0
        else:
            self._daily_playlist_index = (self._daily_playlist_index + 1) % len(self._daily_playlist)

        song = self._daily_playlist[self._daily_playlist_index]
        song['index'] = self._daily_playlist_index
        self.get_netease_song(song, netease)  # 判断是否网易320k
        self._playingsong = song

        return song