code: def _delete(self, obj, **kwargs):
          
          if isinstance(obj, sqlalchemy.orm.query.Query):
              obj = obj.one()
          obj = self.preprocessing(obj=obj).delete()
          self.session.delete(obj)
          if kwargs.get('commit', self.commit) is True:
              try:
                  self.session.commit()
              except AssertionError:
                  transaction.commit()
          return True
docs: Delete the object directly.
  
          .. code-block:: python
  
              DBSession.sacrud(Users)._delete(UserObj)
  
          If you no needed commit session
  
          .. code-block:: python
  
              DBSession.sacrud(Users, commit=False)._delete(UserObj)