[email protected]:/home/python#python python_json_from_python_sort_keys.py
{
    "age": 63,
    "cars": [
        {
            "model": "Porsche",
            "mpg": 38.2
        },
        {
            "model": "BMW M5",
            "mpg": 26.9
        }
    ],
    "children": [
        "Jennifer",
        "Rory",
        "Phoebe"
    ],
    "divorced": false,
    "married": true,
    "name": "Bill",
    "pets": null
}