遍历可变长度字典的嵌套列表，获取特定的键值对

创建一个递归函数，该函数可以更深入地访问包含比键更高一级的字典，在这种情况下，“耦合”是必需的，在列表中捕获这些字典，而在递归中，该列表将使您的数据:)

def deep(data, key,l):
    if isinstance(data, list):
        for d in data:
             deep(d, key,l)
    if isinstance(data, dict):
        if key in data.keys():
            l.append(data)
            #return data
        else:
            for dkey in data.keys():
                if isinstance(data.get(dkey), dict):
                     deep(data.get(dkey), key,l)
                if isinstance(data.get(dkey), list):
                    for d in data.get(dkey):
                         deep(d, key,l)
                else:
                    continue
    return l #you must return list
                    
l=[]
deep(list1,'coupling',l)
l
Out[161]: 
[{'coupling': {'category': 'A', 'value': '0'},
  'file_path': '89224495-b8b3-43c9-ac8d-addb755ab271/xyz/vvv/src/controller/IncentiveRateController.java',
  'metric': 'coupling',
  'name': 'IncentiveRateController.java'},
 {'coupling': {'category': 'A', 'value': '0'},
  'file_path': '89224495-b8b3-43c9-ac8d-addb755ab271/xyz/vvv/src/controller/MaintainIncentiveController.java',
  'metric': 'coupling',
  'name': 'MaintainIncentiveController.java'},
 {'coupling': {'category': 'A', 'value': '0'},
  'file_path': '89224495-b8b3-43c9-ac8d-addb755ab271/xyz/vvv/src/delegate/IncentiveRateDelegate.java',
  'metric': 'coupling',
  'name': 'IncentiveRateDelegate.java'},
 {'coupling': {'category': 'A', 'value': '0'},
  'file_path': '89224495-b8b3-43c9-ac8d-addb755ab271/xyz/vvv/src/impl/IncentiveRateJPARepositoryImpl.java',
  'metric': 'coupling',
  'name': 'IncentiveRateJPARepositoryImpl.java'}]

在 df 上申请

l=[]
df = pd.DataFrame([list1],columns=['A'])
df['B']=df['A'].apply(lambda x: deep(x,'coupling',l))
df['B']
Out[133]: 
0    [{'coupling': {'category': 'A', 'value': '0'}, 'file_path': '89224495-b8b3-43c9-ac8d-addb755ab271/xyz/vvv/src/controller/IncentiveRateController.java', 'metric': 'coupling', 'name': 'IncentiveRateController.java'}, {'coupling': {'category': 'A', 'value': '0'}, 'file_path': '89224495-b8b3-43c9-ac8d-addb755ab271/xyz/vvv/src/controller/MaintainIncentiveController.java', 'metric': 'coupling', 'name': 'MaintainIncentiveController.java'}, {'coupling': {'category': 'A', 'value': '0'}, 'file_path': '89224495-b8b3-43c9-ac8d-addb755ab271/xyz/vvv/src/delegate/IncentiveRateDelegate.java', 'metric': 'coupling', 'name': 'IncentiveRateDelegate.java'}, {'coupling': {'category': 'A', 'value': '0'}, 'file_path': '89224495-b8b3-43c9-ac8d-addb755ab271/xyz/vvv/src/impl/IncentiveRateJPARepositoryImpl.java',...
Name: B, dtype: object