Parsing values from Json

12/5/16

http://stackoverflow.com/questions/2835559/parsing-values-from-a-json-file-in-python

[] are for lists, {} are for dictionaries.

Here's how your JSON file should look:

{
    "maps": [
        {
            "id": "blabla",
            "iscategorical": "0"
        },
        {
            "id": "blabla",
            "iscategorical": "0"
        }
    ],
    "masks": {
        "id": "valore"
    },
    "om_points": "value",
    "parameters": {
        "id": "valore"
    }
}

Then you can use your code:

import json
from pprint import pprint

with open('data.json') as data_file:    
    data = json.load(data_file)

pprint(data)

- With data, you can now also find values like so:

data["maps"][0]["id"] ...... here [0] because maps has values in [..]. If [0] not used it will throw string - int error.
data["masks"]["id"]
data["om_points"]

 

- How I can get the number of elements in node of JSON data?

Source: http://stackoverflow.com/questions/27315472/how-to-count-items-in-json-data

down voteaccepted

import json json_data = json.dumps({ "result":[ { "run":[ { "action":"stop" }, { "action":"start" }, { "action":"start" } ], "find": "true" } ] }) item_dict = json.loads(json_data) print len(item_dict['result'][0]['run']) Convert it in dict.