:param artist_id: artist_id
        :return: {
            code: int,
            artist: {artist},
            more: boolean,
            hotSongs: [songs]
        }

def artist_infos(self, artist_id):
        """
        :param artist_id: artist_id
        :return: {
            code: int,
            artist: {artist},
            more: boolean,
            hotSongs: [songs]
        }
        """
        action = uri + '/artist/' + str(artist_id)
        data = self.request('GET', action)
        return data