PYTHON

read json

import os, json, uuid

filename = 'data.json'
with open(filename, 'r') as f:
    data = json.load(f)
    data['id'] = 134 # <--- add `id` value.
    # add, remove, modify content

# create randomly named temporary file to avoid 
# interference with other thread/asynchronous request
tempfile = os.path.join(os.path.dirname(filename), str(uuid.uuid4()))
with open(tempfile, 'w') as f:
    json.dump(data, f, indent=4)

# rename temporary file replacing old file
os.rename(tempfile, filename)

reading the JSON from a JSON object

# reading the JSON from a JSON object
import json
json_object_string = """{
    "id": "123",
    "name": "John Doe",
    "occupation": "Farmer"
}
"""
data_dict = json.loads(json_object_string)
print(data_dict)

reading json

Not that difficult really it's just a formatted array that is made
in such a way to be human readable and also parsed by a piece of code 
(parsing example:
 https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Objects/JSON )
 but the main things to remember is that it is grouped so there may be lots of 
 "names" in one part of a json file but this allows you to just find the names 
 section and see all info inside. :) hope this helped