Python for Testers : Validating a JSON API Response Without Any Framework

Most Testers validate API responses inside a test framework. But do we know how to do it with just Python?

Scenario: Our API returns a JSON response after creating a user. We need to verify the status, the message, and the user details are exactly what we expected.

Here is the JSON response:

*JSON data:
*

{
    "status": "success",
    "message": "User created",
    "user": {
        "id": 101,
        "name": "Ujjwal"
    }
}

Here is the Python validation:

*Python code:
*

import json

with open("data.json", "r") as file:
    data = json.load(file)

    if data["status"] == "success" and data["user"]["name"] == "Ujjwal" and data["user"]["id"] == 101:
        print("Validation Passed")
    else:
        print("Validation Failed")

Output:

Validation Passed

****Why this matters as a Tester:

---

Before we reach for requests or pytest, understanding how Python reads and validates JSON at the base level makes us a sharper tester. Every API assertion we write in a framework is doing exactly this under the hood.

Knowing the foundation makes us better at debugging when the framework gives us a result we did not expect.

GitHub: https://github.com/beinghumantester/Fundamental-Coding-Programs