Important housekeeping notes

Before diving into the rest of the chapter, let's get some housekeeping out of the way. If you haven't already, you should read the Preface, which documents most of the following things:

• Every chapter will have its own set of Python source files. Although we will talk through most of the code, you should keep the relevant files at hand.
• The source code can be downloaded from the Packt Publishing website. Follow the instructions mentioned in the Preface.
• The code illustrated in this book is compatible with Python version 3.5.1. The supporting code bundles also provide files compatible with version 2.7.9.
• As noted before, it is assumed that you are familiar with basics of the Python language and know OOP concepts.
• The book uses a fun, text-based game theme as a vehicle to explain various application development aspects. However, the book itself is not about developing game applications!
• The solutions to the exercises (if any) are generally not provided.
• The book provides several external links (URLs) for further reading. Over time, some of these links might end up being broken. If that ever happens, try searching the web with appropriate search terms.