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

Test coverage

A test coverage report is useful in determining the percentage of our code that was executed in the course of testing. Let’s install the coverage module so we can measure whether our API was adequately tested:

(venv)$ pip install coverage

Next, let’s generate a coverage report by running this command:

(venv)$ coverage run -m pytest

Here’s the result:

Figure 8.15 – Coverage report generated

Next, let’s view the report generated by the coverage run -m pytest command. We can choose to view the report on the terminal or a web page by generating an HTML report. We’ll do both.

Let’s review the report from the terminal:

(venv)$ coverage report

Here’s the result:

Figure 8.16 – Coverage report from the terminal

From the preceding report, the percentages signify the amount of code executed and interacted with. Let’s generate the HTML report...