从深度遍历嵌套字典并移至顶部 [英] Traverse nested dictionary from depth and move to top

问题描述

我有下面的词典(由报告生成，因此结构可以更改). 我需要转到字典的深度，找到id(在这种情况下为'id': u'ef3c8cf1-0987-4e56-a6d5-763c42be1f75')(可以大于1)，删除该ID，然后向上移动一级并重复相同的操作，直到我到达顶部id，我终于删除了它.由于存在依赖关系，因此我需要先删除孤立的id，然后再移至顶部.

I have below dictionary (generated from a report, so the structure can change). I need to go to the depth of the dictionary, find the id which in this case is 'id': u'ef3c8cf1-0987-4e56-a6d5-763c42be1f75', (there can be more than 1), delete that id and then move to one level up and repeat the same till I get to the top id which I finally delete. Since there is a dependency, I need to delete the orphan id first and then move to the top.

任何帮助都是有意义的.如果需要任何其他文件/信息，请告诉我.

Any help is appreciable. If any other file/information is needed, please let me know.

{ 
'id': u'4c31d813-a989-47dd-b01b-9a27b8db2dfc',                                                                                                                      
'snapshots': 
    [
        {
            'id': u'3ddc7ddd-02ca-4669-a0cb-fb0d56a4a6f5', 
            'volumes': 
                [
                    {  
                        'id': u'5488de90-50dc-4d72-a6aa-c995422fa179', 
                        'snapshots': [], 
                        'snapshot_id': u'3ddc7ddd-02ca-4669-a0cb-fb0d56a4a6f5'
                    }, 
                    {
                        'id': u'e566645f-4fb3-4778-be67-447a5bdd678d', 
                        'snapshots': 
                            [
                                { 
                                    'id': u'd637f6ea-4a41-448c-874f-ffe624ddc597', 
                                    'volumes': 
                                        [
                                            { 
                                                'id': u'ef3c8cf1-0987-4e56-a6d5-763c42be1f75', 
                                                'snapshots': [], 
                                                'snapshot_id': u'd637f6ea-4a41-448c-874f-ffe624ddc597'
                                            }
                                        ]
                                }
                            ], 
                        'snapshot_id': u'3ddc7ddd-02ca-4669-a0cb-fb0d56a4a6f5'}, 
                    {
                        'id': u'196483ee-4f21-4d83-8e15-8caea532b2ab', 
                        'snapshots': [], 
                        'snapshot_id': u'3ddc7ddd-02ca-4669-a0cb-fb0d56a4a6f5'
                    }
                ]
        }
    ], 
'snapshot_id': None
}

Python代码

oh=openstack_helper.OpenstackHelper()

def get_objects(item):
    items=None
    if item == 'stacks':
        items=oh.get_stacks()
    if item == 'volumes':
        items=oh.get_volumes()
    if item == 'snapshots':
        items=oh.get_snapshots()
    return items


def dep_graph(volumes,snapshots,snapshot_id=None):
    vol_list=[]

    for volume in volumes:
        if volume.snapshot_id == snapshot_id:
            info={'id':volume.id,'snapshot_id':volume.snapshot_id,'snapshots':[],
                  }
            vol_list.append(info)
    for snapshot in snapshots:
        for volume in vol_list:
            snap_list=[]
            if snapshot.volume_id == volume['id']:
               info={'id':snapshot.id, 'volumes':[]}
               info['volumes'].extend(dep_graph(volumes,snapshots,snapshot.id))
               volume['snapshots'].append(info)
    return vol_list

if __name__ == '__main__':

    volumes = get_objects('volumes')
    snapshots = get_objects('snapshots')
    output = dep_graph(volumes, snapshots)
    print output

推荐答案

这是我建议的解决方案:

Here is the solution I propose:

def remove_id(data):
    if isinstance(data, List):
        return [remove_id(sub_data) for sub_data in data]

    if isinstance(data, Dict):
        return {key: remove_id(value) for key, value in data.items()
                if key != 'id'}

    return data

结果:

{'snapshot_id': None,
 'snapshots': [{'volumes': [{'snapshot_id': '3ddc7ddd-02ca-4669-a0cb-fb0d56a4a6f5',
                             'snapshots': []},
                            {'snapshot_id': '3ddc7ddd-02ca-4669-a0cb-fb0d56a4a6f5',
                             'snapshots': [{'volumes': [{'snapshot_id': 'd637f6ea-4a41-448c-874f-ffe624ddc597',
                                                         'snapshots': []}]}]},
                            {'snapshot_id': '3ddc7ddd-02ca-4669-a0cb-fb0d56a4a6f5',
                             'snapshots': []}]}]}

这篇关于从深度遍历嵌套字典并移至顶部的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！