Book Image

Building Python Web APIs with FastAPI

By : Abdulazeez Abdulazeez Adeshina
Book Image

Building Python Web APIs with FastAPI

By: Abdulazeez Abdulazeez Adeshina

Overview of this book

RESTful web services are commonly used to create APIs for web-based applications owing to their light weight and high scalability. This book will show you how FastAPI, a high-performance web framework for building RESTful APIs in Python, allows you to build robust web APIs that are simple and intuitive and makes it easy to build quickly with very little boilerplate code. This book will help you set up a FastAPI application in no time and show you how to use FastAPI to build a REST API that receives and responds to user requests. You’ll go on to learn how to handle routing and authentication while working with databases in a FastAPI application. The book walks you through the four key areas: building and using routes for create, read, update, and delete (CRUD) operations; connecting the application to SQL and NoSQL databases; securing the application built; and deploying your application locally or to a cloud environment. By the end of this book, you’ll have developed a solid understanding of the FastAPI framework and be able to build and deploy robust REST APIs.
Table of Contents (14 chapters)
Part 1: An Introduction to FastAPI
Part 2: Building and Securing FastAPI Applications
Part 3: Testing And Deploying FastAPI Applications

Building a simple CRUD app

We have built routes for creating and retrieving todos. Let’s build the routes for updating and deleting the added todo. Let’s start by creating a model for the request body for the UPDATE route in

class TodoItem(BaseModel):
   item: str
   class Config:
       schema_extra = {
           "example": {
               "item": "Read the next chapter of the book"

Next, let’s write the route for updating a todo in

from fastapi import APIRouter, Path
from model import Todo, TodoItem
todo_router = APIRouter()
todo_list = []"/todo")
async def add_todo(todo...