Python Library || requests || JSON ||

Requests Library

Method	Python Function	Typical REST Action	Example
GET	requests.get(url)	Read / retrieve data	Get a list of users
POST	requests.post(url, json=data)	Create a new resource	Add a new user
PUT	requests.put(url, json=data)	Update entire resource	Replace user info
PATCH	requests.patch(url, json=data)	Update partial resource	Change user name only
DELETE	requests.delete(url)	Delete a resource	Remove a user

Attribute	Description	Example
.status_code	HTTP status returned (e.g., 200, 201, 404)	print(response.status_code)
.json()	Parses the response body as JSON and returns a Python dict	data = response.json()
.text	Returns the raw response body as a string	print(response.text)
.headers	Returns response headers as a dict	print(response.headers)
.ok	Returns True if status code < 400	if response.ok:

JSON Library

json.dump    Send Python dict → JSON text

json.load       Parse JSON text → Python dict

 

 >>> Real-world analogy Requests & JSON  >>>>

Think of JSON as a common language both sides agree on:

System	Language
Python	“dict / list” objects
REST API	“JSON text”

You translate before talking:

• dumps() → “speak JSON” to the API

• loads() → “translate JSON back” to Python

Without conversion, your message would be like two people speaking different languages.

Action	Conversion Function	Example
Send Python dict → JSON text	json.dumps()	requests.post(url, data=json.dumps(payload))
Parse JSON text → Python dict	json.loads()	data = json.loads(resp.text)
Requests shortcut	requests.post(url, json=payload) and resp.json()	handles conversion automatically

Example

import requests

import json

BASE_URL = "https://jsonplaceholder.typicode.com/posts"

payload = {

    "title": "Network Automation",

    "body": "Learning REST API with Python requests!",

    "userId": 101

}

post_resp = requests.post(BASE_URL, json=payload)

print ("======== status code =============")

print(post_resp.status_code)

print ("======== response json =============")

print(post_resp.json())

print ("======== response headers=============")

print(post_resp.headers)

print ("======== ok=============")

print(post_resp.ok)

print ("======== text=============")

print(post_resp.text)

print ("======== json format=============")

print(json.dumps(post_resp.json(), indent=4))

root@ems-host:/home/a4ems/mohan# /usr/bin/python /home/a4ems/mohan/Practice/script.py ======== status code ============= 201 ======== response json ============= {'title': 'Network Automation', 'body': 'Learning REST API with Python requests!', 'userId': 101, 'id': 101} ======== response headers============= {'Date': 'Mon, 06 Oct 2025 14:12:17 GMT', 'Content-Type': 'application/json; charset=utf-8', 'Content-Length': '118',

'Connection': 'keep-alive', 'access-control-allow-credentials': 'true', 'access-control-expose-headers': 'Location',

'Cache-Control': 'no-cache', 'etag': 'W/"76-a2D8+9IBLlHeQ1YHBIH4Ll/aZ80"', 'expires': '-1',

'location': 'https://jsonplaceholder.typicode.com/posts/101', 'nel': '{"report_to":"heroku-nel",

"response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1}',

'pragma': 'no-cache', 'report-to': '{"group":"heroku-nel",

"endpoints":[{"url":"https://nel.heroku.com/reports?s=BeoO2GL8GVs9ctwZbZQx163sTS%2BqGRB%2BaMDlq

4Sb60I%3D\\u0026sid=e11707d5-02a7-43ef-b45e-2cf4d2036f7d\\u0026ts=1759759937"}],"max_age":3600}',

'reporting-endpoints': 'heroku-nel="https://nel.heroku.com/reports?s=BeoO2GL8GVs9ctwZbZQx163sTS%2BqGR

B%2BaMDlq4Sb60I%3D&sid=e11707d5-02a7-43ef-b45e-2cf4d2036f7d&ts=1759759937"',

'Server': 'cloudflare', 'vary': 'Origin, X-HTTP-Method-Override, Accept-Encoding',

'via': '2.0 heroku-router', 'x-content-type-options': 'nosniff', 'x-powered-by': 'Express', 'x-ratelimit-limit': '1000',

'x-ratelimit-remaining': '999', 'x-ratelimit-reset': '1759759961', 'cf-cache-status': 'DYNAMIC',

'CF-RAY': '98a5c0b6facd8974-SIN', 'alt-svc': 'h3=":443"; ma=86400'} ======== ok============= True ======== text============= { "title": "Network Automation", "body": "Learning REST API with Python requests!", "userId": 101, "id": 101 } ======== json format============= { "title": "Network Automation", "body": "Learning REST API with Python requests!", "userId": 101, "id": 101 }