What is JSON in python

 (11)JSON:

JSON is a short form for 'Java Script Object Notation' which is a text-based, human-readable data interchange format used for representing simple data structure and objects in web-browser-based code.

It is heavily used in web applications. Python comes with a build-in JSON module which makes it easy to work with

for example:

1.Encoding(serialization) and decoding JSON data:

To convert the python dictionary to JSON format import the JSON module then make a variable and store the command 'Jason.dumps(name of python dictionary)'.

for example:

import json

person = {"name": "John", "age": 30, "city": "New York","hasChildren": False, 

"titles": ["engineer" ,"programmer"]}

personJSON = json.dumps(person)

print(personJSON)

output = {"name": "John", "age": 30, "city": "New York", "hasChildren": false, "titles": ["engineer", "programmer"]}

To convert JSON to python

for example:

import json

person_json = """

{

    "age": 30, 

    "city": "New York",

    "hasChildren": false, 

    "name": "John",

    "titles": [

        "engineer",

        "programmer"

    ]

}

"""

person = json.loads(person_json)

print(person)

output =

{'age': 30, 'city': 'New York', 'hasChildren': False, 'name': 'John', 'titles': ['engineer', 'programmer']}

To sort keys:

for example:

import json

person = {"name": "John", "age": 30, "city": "New York","hasChildren": False, "titles": ["engineer" ,"programmer"]}

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

print(personJSON)

output = 

{

    "age": 30,

    "city": "New York",

    "hasChildren": false,

    "name": "John",

    "titles": [

        "engineer",

        "programmer"

    ]

}

To open the text in a file. This will make a json file and will have the text converted from python dict to JSON.

for example:

import json

person = {"name": "John", "age": 30, "city": "New York","hasChildren": False, 

"titles": ["engineer" ,"programmer"]}

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

print(personJSON)

with open('persons.json', 'w') as file:

    json.dump(person, file)

output = 

{

    "age": 30,

    "city": "New York",

    "hasChildren": false,

    "name": "John",

    "titles": [

        "engineer",

        "programmer"

    ]

}

person.json file:

{"name": "John", "age": 30, "city": "New York", "hasChildren": false, "titles": ["engineer", "programmer"]}

To decode JSON file back to python format.

for example:

 import json

person = {"name": "John", "age": 30, "city": "New York","hasChildren": False, "titles": ["engineer" ,"programmer"]}

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

person = json.loads(personJSON)

print(person)

output = 

{'age': 30, 'city': 'New York', 'hasChildren': False, 'name': 'John', 'titles': ['engineer', 'programmer']}

To decode variables in JSON.

for example:

import json

class User:

    def __init__(self, name, age):

        self.name = name

        self.age = age

user = User('Max', 27)

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')

    useJSON = json.dumps(user, defualt=encode_user)

    print(userJSON)

output = 

{"name": "Max", "age": 27, "User": true}