my loop is only printing the second part of the dictionary , i'm using json

Question

import json

data ='''
    {
   "names": {"first_boy" : "khaled"},
   "names": {"second_boy" : "waseem"}
    }
    '''
info = json.loads(data)
for line in info:
    print(info["names"])

I expected it to print the first_boy and the second_boy dictionary ,but it's printing

{'second_boy': 'waseem'}

The problem here is that you have 2 keys with the same name "names". — Kevin Müller, Jul 31 '19 at 14:09
Also is there a specific reason you save the Dict as string and then turn it back to json? You can save it as json directly. — Kevin Müller, Jul 31 '19 at 14:15

score 4 · Answer 1 · answered Jul 31 '19 at 14:11

Dicts in python can only support one of the same key. Similarly, most implementations of JSON do not allow duplicate keys. The way python handles this, when using json.loads() (or anything else that constructs a dict) is to simply use the most recent definition of any given key.

In this case, {"second_boy":"waseem"} overwrites {"first_boy":"khaled"}.

Kevin Müller · Answer 2 · 2019-07-31T14:16:44.430

1

The problem here is that the key "names" exists 2 times. Maybe you can do this:

import json

data ='''
    {
   "names": {"first_boy" : "khaled",
             "second_boy" : "waseem"}
    }
    '''
info = json.loads(data)
for key, value in info['names'].items():
    print(key, value)

edited Jul 31 '19 at 14:16

answered Jul 31 '19 at 14:11

Kevin Müller

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Suggestion to make it a more complete example: for key,value in info['names'].items(): print(key, value) – Hkoof Jul 31 '19 at 14:15
@Hkoof Thanks for the suggestion, you are right, should be a better answer now. Thanks! – Kevin Müller Jul 31 '19 at 14:17

my loop is only printing the second part of the dictionary , i'm using json

2 Answers2