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. — skistaddy
– skistaddy, Commented Aug 1, 2017 at 16:07
Possible duplicate of Converting JSON String to Dictionary Not List — A Magoon
– A Magoon, Commented Aug 1, 2017 at 16:08
But in your question, you define two dictionaries as output? — willeM_ Van Onsem
– willeM_ Van Onsem, Commented Aug 1, 2017 at 16:09

willeM_ Van Onsem · Accepted Answer · 2017-08-01 16:10:54Z

7

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.

answered Aug 1, 2017 at 16:10

willeM_ Van Onsem

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