use_json.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import json

d = dict(name="Bob", age=20, score=88)
data = json.dumps(d)
print("JSON Data is a str:", data)
reborn = json.loads(data)
print(reborn)


class Student(object):
    def __init__(self, name, age, score):
        self.name = name
        self.age = age
        self.score = score

    def __str__(self):
        return "Student object (%s, %s, %s)" % (self.name, self.age, self.score)


s = Student("Bob", 20, 88)
std_data = json.dumps(s, default=lambda obj: obj.__dict__)
print("Dump Student:", std_data)
rebuild = json.loads(
    std_data, object_hook=lambda d: Student(d["name"], d["age"], d["score"])
)
print(rebuild)