docs: def _parse_segments(self):
          """ Read the segment output file and parse into an SQLite database.
          """
          reader = csv.reader(open(self._segment_file, 'rU'),
                              delimiter='\t')
          for row in reader:
              if reader.line_num == 1:  # skip header
                  continue
              sql = '''INSERT INTO segments
                       (id, multiplicon, genome, list, first, last, ord)
                       VALUES (?,?,?,?,?,?,?)'''
              self._dbconn.execute(sql, row)
          self._dbconn.commit()