code: def get_multiplicon_segments(self, value):
          
          sql = '''SELECT genome, first, last FROM segments
                     WHERE multiplicon=:mp'''
          cur = self._dbconn.cursor()
          cur.execute(sql, {'mp': str(value)})
          result = cur.fetchall()
          cur.close()
          segdict = collections.defaultdict(tuple)
          for genome, start, end in result:
              segdict[genome] = (start, end)
          return segdict
docs: Return a dictionary describing the genome segments that
              contribute to the named multiplicon, keyed by genome, with
              (start feature, end feature) tuples.