def _split_batch_csv(self, data_file, f_values, f_ids):
    writer_values = unicodecsv.writer(f_values)
    writer_ids = unicodecsv.writer(f_ids)
    for row in unicodecsv.reader(data_file):
        writer_values.writerow(row[1:])
        writer_ids.writerow([row[:1]])
    f_values.seek(0)
    f_ids.seek(0)
    return (f_values, f_ids)
def _split_batch_csv(self, data_file, f_values, f_ids):
    writer_values = unicodecsv.writer(f_values)
    writer_ids = unicodecsv.writer(f_ids)
    for row in unicodecsv.reader(data_file):
        writer_values.writerow(row[1:])
        writer_ids.writerow([row[:1]])
    f_values.seek(0)
    f_ids.seek(0)
    return (f_values, f_ids)