Build REST APIs with Pydantic Validation - Python FastAPI Tutorial -#38
Learn FastAPI Basics! In this tutorial, you will learn how to build REST APIs using FastAPI, a modern Python web framework with automatic validation.
What you will learn:
Creating a FastAPI application with app decorators
Defining GET endpoints with path and query parameters
Using Pydantic BaseModel for request validation
Handling POST requests with JSON bodies
Raising HTTPException for proper error responses
Building async endpoints with async def
Implementing full CRUD (Create, Read, Update, Delete)
Testing APIs with TestClient (no server needed)
Automatic 422 validation errors for missing fields
Using model_dump for Pydantic v2 serialization
Timestamps:
0:00 - Introduction
0:33 - FastAPI Basics Explained
1:00 - FastAPI Basics Demo
3:58 - Pydantic Models Explained
4:25 - Pydantic Models Demo
7:52 - Employee API Explained
8:19 - Employee API Demo
12:45 - Recap
13:25 - End
Source code: https://github.com/GoCelesteAI/python...
Previous: Lesson 37 - CLI Applications
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Next: Lesson 39 - Flask
Coming soon!
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Tags
Python, FastAPI, REST API, Pydantic, CRUD, Python Tutorial, BaseModel, HTTPException, TestClient, async, web framework, Python for beginners, learn Python, coding
tutorial, CelesteAI, API development