How do i create a new json file in python?

The full form of JSON is Javascript Object Notation. It means that a script [executable] file which is made of text in a programming language, is used to store and transfer the data. Python supports JSON through a built-in package called JSON. To use this feature, we import the JSON package in Python script. The text in JSON is done through quoted-string which contains the value in key-value mapping within { }. It is similar to the dictionary in Python.

Writing JSON to a file in Python

Serializing JSON refers to the transformation of data into a series of bytes [hence serial] to be stored or transmitted across a network. To handle the data flow in a file, the JSON library in Python uses dump[] or dumps[] function to convert the Python objects into their respective JSON object, so it makes it easy to write data to files. See the following table given below.

Method 1: Writing JSON to a file in Python using json.dumps[] 

The JSON package in Python has a function called json.dumps[] that helps in converting a dictionary to a JSON object. It takes two parameters:

• dictionary – the name of a dictionary which should be converted to a JSON object.
• indent – defines the number of units for indentation

After converting the dictionary to a JSON object, simply write it to a file using the “write” function.

Python3

import json

dictionary = {

    "name": "sathiyajith",

    "rollno": 56,

    "cgpa": 8.6,

    "phonenumber": "9976770500"

}

json_object = json.dumps[dictionary, indent=4]

with open["sample.json", "w"] as outfile:

    outfile.write[json_object]

Output: 

Method 2: Writing JSON to a file in Python using json.dump[] 

Another way of writing JSON to a file is by using json.dump[] method The JSON package has the “dump” function which directly writes the dictionary to a file in the form of JSON, without needing to convert it into an actual JSON object. It takes 2 parameters:

• dictionary – the name of a dictionary which should be converted to a JSON object.
• file pointer – pointer of the file opened in write or append mode.

Python3

import json

dictionary = {

    "name": "sathiyajith",

    "rollno": 56,

    "cgpa": 8.6,

    "phonenumber": "9976770500"

}

with open["sample.json", "w"] as outfile:

    json.dump[dictionary, outfile]

Output: 

Reading JSON from a file using Python

Deserialization is the opposite of Serialization, i.e. conversion of JSON objects into their respective Python objects. The load[] method is used for it. If you have used JSON data from another program or obtained it as a string format of JSON, then it can easily be deserialized with load[], which is usually used to load from a string, otherwise, the root object is in a list or Dict. 

Reading JSON from a file using  json.load[] 

The JSON package has json.load[] function that loads the JSON content from a JSON file into a dictionary. It takes one parameter:

• File pointer: A file pointer that points to a JSON file.

Python3

import json

with open['sample.json', 'r'] as openfile:

    json_object = json.load[openfile]

print[json_object]

print[type[json_object]]

Output: 

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