def _get_value(self, ctx, node_state):
        try:
            return self._get_cached_value_and_date(ctx, node_state)[0]
        except __HOLE__:
            if self._default_value is self._no_default_value_:
                raise

        return self._default_value
dataset/ETHPy150Open manahl/mdf/mdf/nodes.py/MDFVarNode._get_value