JSON in Python 3

Serializing

To serialize a JSON string into a Python object:

import json

json_str = '[{"first": "bob", "last": "smith"}]'
json_obj = json.loads(json_str)

The json_obj variable will contain an Python list that can be iterated over:

for info in json_obj:
    print('First: {0}; Last: {1}'.format(info["first"], info["last"]))

The above code will print:

First: bob; Last: smith

Deserializing

Here's how to deserialize a Python object into a JSON string:

import json

json_obj = [{"first": "bob", "last": "smith"}]
json_str = json.dumps(json_obj)

The json_str variable will contain a string:

[{"first": "bob", "last": "smith"}]