HTTP Request Libraries · Course Guide

This 20-chapter course systematically covers Python's two most popular HTTP client libraries:

Library	Positioning	Version Baseline
requests	The de-facto standard for sync requests; richest ecosystem	requests 2.34.x
httpx	Modern full-featured client with native async + HTTP/2	httpx 0.28.x

What You Will Learn

Stage	Chapters	Content
Beginner	01–05	HTTP basics, core requests API, request parameters, response handling, JSON/files
Intermediate	06–10	Sessions, timeouts & retries, proxies & SSL, exceptions, httpx intro
Advanced	11–15	Async requests, concurrency, HTTP/2, middleware, pytest integration
Production	16–20	Performance tuning, API client wrappers, security, deployment, capstone

How It Connects to Other Courses

• Pairs with pytest chapter 19 (web service testing);
• Complements FastAPI chapter 20 (testing) for a complete web-testing skill set;
• Complements Playwright — Playwright tests browsers, while requests/httpx test APIs.

Official References

This course is written strictly against the following authoritative documentation:

Source	Link
requests.readthedocs.io	https://requests.readthedocs.io/en/latest/
www.python-httpx.org	https://www.python-httpx.org/

Version baseline: requests 2.34 + httpx 0.28

Prerequisites

• Basic Python; a grasp of fundamental HTTP concepts (GET/POST, status codes, headers);
• Completing the first six chapters of our pytest course first is recommended.

👉 Start from Chapter 1.