Handling dictionary object in python

Question

I have following python dictionary object(json schema) - A which is a list of dictionary elements-

[
  {
    "id": 101, 
    "type": "fruit", 
    "name": "apple"
  },
  {
    "id": 102, 
    "type": "fruit", 
    "name": "mango"
  },
  {
    "id": 103, 
    "type": "vegetable", 
    "name": "cabbage"
  },
  {
    "id": 104, 
    "type": "vegetable", 
    "name": "carrot"
  }
]

Can somebody tell me how can I manipulate this list of dictionary object as I want following as the output B :-

[
  {
    "id": 102, 
    "type": "fruit", 
    "name": "mango"
  }
]

I tried doing this :-

import json

for myObj in A:
   if myObj['id'] == 102:
      myVal = myObj
test = json.dumps(myVal)
my_op = json.loads(test)

but this is not working as it is returning me "unicode" as type but I want dictionary "list" as its type.

Solution:-

import json

for myObj in A:
   if myObj['id'] == 102:
      myVal = [myObj] # Add myObj to list again which fixes the issue
test = json.dumps(myVal)
my_op = json.loads(test)

score 3 · Accepted Answer · answered Sep 12 '14 at 11:01

3

import json

for myObj in A:
   if myObj['id'] == 102:
      myVal = [myObj]
test = json.dumps(myVal)
B = json.loads(test)
print B

answered Sep 12 '14 at 11:01

German Petrov

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Martijn Pieters · Answer 2 · 2014-09-12T10:58:59.507

1

You need to put myVal into a list again:

myVal = [myObj]

This produces:

[{u'type': u'fruit', u'id': 102, u'name': u'mango'}]

after running it through json.dumps() / json.loads(). The Unicode strings are entirely normal; JSON uses Unicode strings throughout.

edited Sep 12 '14 at 10:58

answered Sep 12 '14 at 10:45

Martijn Pieters

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3,343

I indeed missed adding it to a list again! – COD3R Sep 12 '14 at 11:10

Handling dictionary object in python

2 Answers2