PYTHON ADVANCED - 11 : JSON TUTORIAL

 IN THIS TUTORIAL,  YOU WILL LEARN ABOUT JSON TUTORIAL:

NOTE: TRY ALL TYPES OF CODE WHICH ARE COMMENTED OUT.

import json

#converting python file to json(javascript oriented programming)

# person = {"name":"Shayan", "age": 30, "city": "Patna", "hasChildren": False, "titles": ["Engineer", "Programmer"]}

# personJSON = json.dumps(person, indent=4)#, sort_keys=True)

# print(personJSON)

# with open('person.json', 'w') as file:       #--> file in json

#     json.dump(person, file, indent=4)

#converting json to python file

# person = json.loads(personJSON)

# print(person)

# with open('person.json', 'r') as file:         #--> file reading in python

#     person = json.load(file)

#     print(person)

class User:

    def __init__(self, name, age):

        self.name = name

        self.age = age

user = User('Shayan', 16)

def encode_user(o):

    if isinstance(o, User):

        return{'name': o.name, 'age': o.age, o.__class__.__name__: True}

    else:

        raise TypeError('Object of type user is not JSON serializable')

from json import JSONEncoder

class UserEncoder(JSONEncoder):

    def default(self, o):

        if isinstance(o, User):

            return{'name': o.name, 'age': o.age, o.__class__.__name__: True}

        return JSONEncoder.default(self, o)

# userJSON = json.dumps(user, cls = UserEncoder)

userJSON = UserEncoder().encode(user)

print(userJSON)

def decoder_user(dct):

    if User.__name__ in dct:

        return User(name = dct['name'], age = dct['age'])

    return dct    

# user = json.loads(userJSON)

user = json.loads(userJSON, object_hook=decoder_user)

print(type(user))

print(user.name)