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


In this chapter, we learned what responses and response models are and what is meant by error handling. We also learned about HTTP status codes and why it is important to use them.

We also created response models from the knowledge we gained about creating models from the previous chapter and created a response model to return only the items in the to-do list without their IDs. Lastly, we learned about errors and error handling. We updated our existing routes to return the right response code instead of the default 200 status code.

In the next chapter, you will be introduced to templating FastAPI applications with Jinja. You will first be introduced to the basics needed to get you up and running with Jinja templating, after which you will create a user interface using your templating knowledge for our simple to-do application.