code: def get(self):
          
          val = self.db.get_attributes(self.id, consistent_read=True)
          if val:
              if val.has_key('timestamp'):
                  self.timestamp = val['timestamp']
              if val.has_key('current_value'):
                  self._value = self.item_type(val['current_value'])
              if val.has_key("last_value") and val['last_value'] != None:
                  self.last_value = self.item_type(val['last_value'])
          return self._value
docs: Get the value