Python - convert JSON object to dict

Question

I am wondering how I can convert a json list to a dictionary using the two values of the JSON objects as the key/value pair. The JSON looks like this:

"test": [
                {
                    "name": "default",
                    "range": "100-1000"
                },
                {
                    "name": "bigger",
                    "range": "1000-10000"
                }
        ]

I basically want the dictionary to use the name as the key and the range as the value. SO the dictionary in this case would be {default:100-1000} {bigger: 1000-10000}

Is that possible?

You want to change a string to an integer..? Maybe you should start by setting your JSON strings to integers. — baranskistad, Aug 01 '17 at 16:07
Possible duplicate of [Converting JSON String to Dictionary Not List](https://stackoverflow.com/questions/19483351/converting-json-string-to-dictionary-not-list) — A Magoon, Aug 01 '17 at 16:08
But in your question, you define two dictionaries as output? — Willem Van Onsem, Aug 01 '17 at 16:09
Keyword: [dict comprehension](https://stackoverflow.com/q/1747817/416224). — Kijewski, Aug 01 '17 at 16:12

score 7 · Accepted Answer · answered Aug 01 '17 at 16:10

You can first load the JSON string into a dictionary with json.loads. Next you can use dictionary comprehension to post process it:

from json import loads

{ d['name'] : d['range'] for d in loads(json_string)['test'] }

We then obtain:

>>> { d['name'] : d['range'] for d in loads(json_string)['test'] }
{'bigger': '1000-10000', 'default': '100-1000'}

In case there are two sub-dictionaries with the same name, then the last one will be stored in the result.

Python - convert JSON object to dict

1 Answers1