Book Image

Mastering Python Networking - Third Edition

By : Eric Chou
Book Image

Mastering Python Networking - Third Edition

By: Eric Chou

Overview of this book

Networks in your infrastructure set the foundation for how your application can be deployed, maintained, and serviced. Python is the ideal language for network engineers to explore tools that were previously available to systems engineers and application developers. In Mastering Python Networking, Third edition, you’ll embark on a Python-based journey to transition from traditional network engineers to network developers ready for the next-generation of networks. This new edition is completely revised and updated to work with Python 3. In addition to new chapters on network data analysis with ELK stack (Elasticsearch, Logstash, Kibana, and Beats) and Azure Cloud Networking, it includes updates on using newer libraries such as pyATS and Nornir, as well as Ansible 2.8. Each chapter is updated with the latest libraries with working examples to ensure compatibility and understanding of the concepts. Starting with a basic overview of Python, the book teaches you how it can interact with both legacy and API-enabled network devices. You will learn to leverage high-level Python packages and frameworks to perform network automation tasks, monitoring, management, and enhanced network security followed by Azure and AWS Cloud networking. Finally, you will use Jenkins for continuous integration as well as testing tools to verify your network.
Table of Contents (18 chapters)
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In this chapter, we looked at test-driven development and how it can be applied to network engineering. We started with an overview of TDD; then we looked at examples of using the unittest and pytest Python modules. Python and simple Linux command line tools can be used to construct various tests for network reachability, configuration, and security.

We also looked at how we can utilize testing in Jenkins, a CI tool. By integrating tests into our CI tool, we can gain more confidence in the sanity of our changes. At the very least, we hope to catch any errors before our users do. pyATS is an open source tool that Cisco recently released. It is a network-centric automated testing framework that we can leverage.

Simply put, if it is not tested, it is not trusted. Everything in our network should be programmatically tested as much as possible. As with many software concepts, TDD is a never-ending service wheel. We strive to have as much test coverage as possible, but...