在python嵌套字典中选择性展平并查找键

Question

i have the data in this format present in json file

 [
     {
        "FIRST NAME": "Nasim",
        "EMAIL": "ac@iaculisnec.net",
        "ADDLINE1": "855-8805 Nunc. Avenue",
        "CITY": "Masterton",
        "LOCATION":{"ADDLINE2":"855-8805",
                    "ADDLINE3":"Avenue",
                    "PIN":"100"}
      },
      {
        "FIRST NAME": "Xanthus",
        "EMAIL": "adipiscing.elit@tinciduntcongue.edu",
        "ADDLINE1": "357-4583 Curae; St.",
        "CITY": "Basildon",
        "LOCATION":{"ADDLINE2":"357-4583",
                    "ADDLINE3":"Curae; St.",
                        "PIN":"101"}
     },
     {
        "FIRST NAME": "Hedley",
        "EMAIL": "Quisque.libero.lacus@arcu.ca",
        "ADDLINE1": "315-623 Nibh. Road",
        "CITY": "Abingdon",
        "LOCATION":{"ADDLINE2":"315-623",
                    "ADDLINE3":"Nibh. Road",
                    "PIN":"102"}
   }]

this is my code

 data=json.loads(file('grade.json').read())
 for row in data:
      row['ADDRESS']= row['ADDLINE1']+','+ row['CITY']
      del row['CITY'], row['ADDLINE1']
      row['LOCATION1']=row['LOCATION']['ADDLINE2']+','+row['LOCATION']    ['ADDLINE3']+','+row['LOCATION']['PIN']
      del row['LOCATION']
 data =json.loads(file('grade.json').read())
 out = {}

 for sub in data.values():
      for key, value in sub.items():
          if key in out:
              del out[key]
          else:
              out[key] = value

 print(out)

 file('files','w').write(json.dumps(data))
 out_path= "outfile9.csv"
 fieldnames = list(set(k for d in data for k in d))
  with open(out_path, 'wb') as out_file:
     writer = csv.DictWriter(out_file, fieldnames=fieldnames, dialect='excel')
     writer.writeheader()
     writer.writerows(data)

i want to remove d nested dictionary(LOCATION1, here after formatting-previously was LOCATION) but retain ADDLINE2,3,PIN as the same. i want a flattened dictionary. what can i do to improvise it?

i require keys in this form [firstname,email,address,location{addline2,addline3,pin}] even if extra nested values are added it should dynamically appear in this form

Answer 1

 data=json.loads(file('grade.json').read())
 for row in data:
      row['ADDRESS']= row['ADDLINE1']+','+ row['CITY']
      del row['CITY'], row['ADDLINE1']
      row['LOCATION1']=row['LOCATION']['ADDLINE2']+','+row['LOCATION']    ['ADDLINE3']+','+row['LOCATION']['PIN']
      del row['LOCATION']
 data =json.loads(file('grade.json').read())

the above is all useless because of the last line, resets data. to flatten ADDLINE2,3,PIN , add in the above loop, before everything else

row['ADDLINE2'] = row['LOCATION']['ADDLINE2']
row['ADDLINE3'] = row['LOCATION']['ADDLINE3']
row['PIN '] = row['LOCATION']['PIN ']