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Writing JSON to a file in Python

By IncludeHelp Last updated : February 20, 2024

To write JSON to a file, you can use the combination of json.dumps() method and file handling in Python. The json.dumps() method converts a Python object to a JSON string, opens the file in "w" mode, and writes the JSON string to a file.

Syntax

Below is the code to write JSON to a file:

with open("sample_file.json", "w") as out:
	json.dump(json_data, out)

Python program to write JSON to a file

This program writes a given JSON object to a file in Python.

# Code to write JSON to a file

# Importing json moduke
import json

# Python object to be written
json_data = {
    "id": "101",
    "name": "ALex",
    "age": 21,
    "phonenumber": "8818923409"
}

# Writing to a file
with open("sample_file.json", "w") as out:
    json.dump(json_data, out)

Output

The output of the above program is:

File's data: sample_file.json
{"id": "101", "name": "ALex", "age": 21, "phonenumber": "8818923409"}

To understand the above program, you should have the basic knowledge of the following Python topics:

• Python print() Method
• Python Variables
• Python Strings
• Python Dictionary