def items(self):
        '''access for filtered items'''
        if hasattr(self, '_items'):
            return self.filter_items(self._items)
        self._items = self.get_items()
        return self.filter_items(self._items)
def items ( self ) : if hasattr ( self , '_items' ) : return self . filter_items ( self . _items ) self . _items = self . get_items ( ) return self . filter_items ( self . _items )
access for filtered items