Python JSON to Object

In Python, json.load() and json.loads() takes in object_hook parameter that helps to convert JSON data in to an object.

The deserialised JSON (dict) is passed as an argument to constructor of the hooked class where we can have the implementation for populating the class attributes.

Example:

class MyData:
    def init(self, data):
        self.name = data.get("Name")
        self.phone = data.get("PhoneNumber")

# main
json.loads('{"Name": "test", "PhoneNumber": "123"}', 
    object_hook=MyData)

With this discussion, my colleagues shared few more tricks with object_hook:

https://github.com/python/cpython/issues/96145#issuecomment-1599508607
https://pypi.org/project/dataclasses-json/