Question

我有这样的数据结构：

    [ {'SNAPSHOT': {'SnapshotVersion': '304'}},

      {'SNAPSHOT': {'SnapshotCreationDate': '2015-06-21 17:33:41'}},


      {'CafeData': {'CafeVersion': '2807'}}, 

      {'CafeData': {'IsSoftwareOnly': '1'}}, 

      {'CafeData'{'IsPassportTCPIP': '1'}}

]

输出应该是这样的：

 [ {'SNAPSHOT': {'SnapshotVersion': '304','SnapshotCreationDate': '2015-06-21 17:33:41'}},

   {'CafeData': {'CafeVersion': '2807','IsSoftwareOnly': '1','IsPassportTCPIP': '1'}} 
 
]

Answer 1

使用 https://docs.python.org/3/library/collections.html#collections.defaultdict 在遇到新键时在 defaultdict 中创建一个 dict。

import collections as co

dd = co.defaultdict(dict)

l = [ {'SNAPSHOT': {'SnapshotVersion': '304'}},
      {'SNAPSHOT': {'SnapshotCreationDate': '2015-06-21 17:33:41'}},
      {'CafeData': {'CafeVersion': '2807'}}, 
      {'CafeData': {'IsSoftwareOnly': '1'}}, 
      {'CafeData': {'IsPassportTCPIP': '1'}} ]

for i in l: 
    for k,v in i.items(): 
        dd[k].update(v)

结果：

In [8]: dd
Out[8]: 
defaultdict(dict,
            {'SNAPSHOT': {'SnapshotVersion': '304',
              'SnapshotCreationDate': '2015-06-21 17:33:41'},
             'CafeData': {'CafeVersion': '2807',
              'IsSoftwareOnly': '1',
              'IsPassportTCPIP': '1'}})

Answer 2

l = [ 
      {'SNAPSHOT': {'SnapshotVersion': '304'}},
      {'SNAPSHOT': {'SnapshotCreationDate': '2015-06-21 17:33:41'}},
      {'CafeData': {'CafeVersion': '2807'}}, 
      {'CafeData': {'IsSoftwareOnly': '1'}}, 
      {'CafeData': {'IsPassportTCPIP': '1'}} 
]

mrgdict={}
    
for d in l:
    for key, value in d.items():
        if key in mrgdict:
            mrgdict[key].update(value)
        else:
            mrgdict[key]=value

dict={}
l1=[]
    
for key,value in mrgdict.items():
    dict[key]=value
    l1.append(dict)
    dict={}
print(l1)

如何合并具有相同键的字典

2 个答案: