How to Add Values to a JSON Object in Python

In this tutorial, we’ll show you how to add values to a JSON object in Python. JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write and easy for machines to parse and generate.

Python also contains built-in packages to handle JSON objects, making it easy to add or manipulate data in a JSON object.

Prerequisites

Make sure you have Python installed on your computer. If you haven’t already, you can download Python from the Python official website.

Step 1: Importing the JSON module

To work with JSON in Python, we need to import the json module. Here’s how you can do that:

1
import json

Step 2: Creating a JSON object

To demonstrate how to add values to our JSON object, let’s create a simple JSON object:

1
2
3
4
5
json_object = {
    "name": "John",
    "age": 30,
    "city": "New York"
}

Step 3: Adding Values to JSON Object

To add a value to a JSON object in Python, you just need to assign a new value to a new key in your object. For instance, let’s add a new key “occupation” with a value “Engineer” to our object:

1
json_object['occupation'] = 'Engineer'

Confirming the changes

Print the JSON object to confirm the changes:

1
print(json.dumps(json_object))

The output should be:

{
"name": "John",
"age": 30,
"city": "New York",
"occupation": "Engineer"
}

The Full Code

Here is the entire Python code used in this tutorial:

1
2
3
4
5
6
7
8
9
10
11
import json
 
json_object = {
    "name": "John",
    "age": 30,
    "city": "New York"
}
 
json_object['occupation'] = 'Engineer'
 
print(json.dumps(json_object))

Conclusion

In conclusion, Python makes it very simple to work with JSON data. With just a few steps, you can add values to a JSON object in Python and modify JSON objects to fit your requirements.

As JSON continues to be used widely for data transmission due to its easy readability and simplicity, knowing how to manipulate JSON objects in Python will surely come in handy in your future projects.