Book Image

Python Programming Blueprints

By : Daniel Furtado, Marcus Pennington
Book Image

Python Programming Blueprints

By: Daniel Furtado, Marcus Pennington

Overview of this book

Python is a very powerful, high-level, object-oriented programming language. It's known for its simplicity and huge community support. Python Programming Blueprints will help you build useful, real-world applications using Python. In this book, we will cover some of the most common tasks that Python developers face on a daily basis, including performance optimization and making web applications more secure. We will familiarize ourselves with the associated software stack and master asynchronous features in Python. We will build a weather application using command-line parsing. We will then move on to create a Spotify remote control where we'll use OAuth and the Spotify Web API. The next project will cover reactive extensions by teaching you how to cast votes on Twitter the Python way. We will also focus on web development by using the famous Django framework to create an online game store. We will then create a web-based messenger using the new Nameko microservice framework. We will cover topics like authenticating users and, storing messages in Redis. By the end of the book, you will have gained hands-on experience in coding with Python.
Table of Contents (17 chapters)
Title Page
Copyright and Credits
Dedication
Contributors
Packt Upsell
Preface
Index

Chapter 6. Extending TempMessenger with a User Authentication Microservice

In the last chapter, we created a web-based messenger, TempMessenger, which consists of two microservices—one that is responsible for storing and retrieving messages and another that is responsible for serving web requests.

In this chapter, we will look to extend our existing TempMessenger platform with a User Authentication microservice. This will consist of a Nameko service with a PostgreSQL database dependency that has the ability to create new users and authenticate existing users.

We will also replace our Nameko Web Server microservice with a more suitable Flask app that will allow us to keep track of web sessions for our users.

It is necessary to have read the last chapter in order to follow this chapter.

We will cover the following topics:

  • Creating a Postgres dependency
  • Creating a User Service
  • Securely storing passwords in a Database
  • Authenticating users
  • Creating a Flask app
  • Web sessions