code: def datasets(self):
          
          r = self.session.query(distinct(models.Entry.dataset)).all()
          return [x[0] for x in r]
docs: Distinct datasets (``dataset``) in :class:`.models.Entry`
  
          Distinct datasets are SwissProt or/and TrEMBL
  
          :return: all distinct dataset types
          :rtype: list[str]