树状结构扁平化处理

有这样一个树状结构：

data = [
        {
            "id":1,
            "name":"吃喝",
            "parentId":0,
            "children":[
                {
                    "id":2,
                    "name":"烧烤",
                    "parentId":"1",
                    "children":[]
                },
                {
                    "id":5,
                    "name":"奶茶",
                    "parentId":"1",
                    "children":[]
                }
            ]
        },
        {
            "id":3,
            "name":"玩乐",
            "parentId":0,
            "children":[
                {
                    "id":4,
                    "name":"ktv",
                    "parentId":"3",
                    "children":[]
                },
                {
                    "id":6,
                    "name":"棋牌室",
                    "parentId":"3",
                    "children":[]
                }
            ]
        }
    ]

现在要将其扁平化处理，存进自关联表里，可以编写函数：

def func(source, result, parent_id):
    """树状结构扁平化处理"""
    if source:
        for item in source:
            _dict = deepcopy(item)
            _dict.pop("children")
            result.append(_dict)
            tree_zip(item.get("children"), result, item.get("id"))
    return result

调用方式：

func(data, [], 0)

 结果：

data = [
　　　　　　{'id': 1, 'name': '吃喝', 'parentId': 0}, 
　　　　　　{'id': 2, 'name': '烧烤', 'parentId': '1'},
 　　　　　{'id': 5, 'name': '奶茶', 'parentId': '1'}, 
　　　　　 {'id': 3, 'name': '玩乐', 'parentId': 0},
 　　　　　{'id': 4, 'name': 'ktv', 'parentId': '3'}, 
　　　　　　{'id': 6, 'name': '棋牌室', 'parentId': '3'}
]