tree.py 文件源码

def remove_attributes(hie, g_id, parent, node, json_attrs):
    """remove the attributes from json_attrs from the node"""
    attrs = prim.json_dict_to_attrs(json_attrs)
    if isinstance(hie.node[g_id], GraphNode):
        lhs = nx.DiGraph()
        lhs.add_node(node)
        add_node_attrs(lhs, node, attrs)
        ppp = nx.DiGraph()
        ppp.add_node(node)
        rhs = nx.DiGraph()
        rhs.add_node(node)
        rule = Rule(ppp, lhs, rhs)
        _rewrite(hie, g_id, rule, {node: node})
    elif isinstance(hie.node[g_id], RuleNode):
        hie.node[g_id].rule.remove_node_attrs_rhs(node, attrs)
    else:
        raise ValueError("node is neither a rule nor a graph")