import json

myJson = '{ "update": "2023-03-03", "students": [ { "lastName": "Stefano", "age": 18 }, { "lastName": "Giulia", "age": 22 }, { "lastName": "Gabriele", "age": 20 } ] }'

data = json.loads(myJson)  # json to dictionary

print(data["students"][1]["age"])


data["students"].append({"lastName": 'Masha', "age": 23, "passedExam": None})

print(data)

myNewJson = json.dumps(data, indent=2)  # dictionary to json

print(myNewJson)

# #print(json.dumps(data, indent=2, separators=(". ", " = ")))

# #print(json.dumps(data, indent=2, sort_keys=True))