We have worked on various aspects of network automation with Python, Ansible, and many other tools. If you have been following along with the examples, in the first nine chapters of the book, we have used over 150 files containing over 5,300 lines of code. That's pretty good for network engineers who may have been working primarily with the command-line interface! With our new set of scripts and tools, we are now ready to go out and conquer our network tasks, right? Well, not so fast, my fellow network ninjas.

The first task we face with the code files is how to keep them in a location where they can be retrieved and used by us and others. Ideally, this location would be the only place where the latest version of the file is kept. After the initial release, we might add features and fix bugs in the future, so we would like a way to track these changes and...