top_artists.py 文件源码

def run(self):
        top_10 = nlargest(10, self._input_iterator())
        with self.output().open('w') as out_file:
            for streams, artist in top_10:
                out_line = '\t'.join([
                    str(self.date_interval.date_a),
                    str(self.date_interval.date_b),
                    artist,
                    str(streams)
                ])
                out_file.write((out_line + '\n'))