Raspberry Pi for Python Programmers Cookbook - Second Edition

Chapter 2. Starting with Python Strings, Files, and Menus

In this chapter, we will cover the following topics:

• Working with text and strings
• Using files and handling errors
• Creating a boot-up menu
• Creating a self-defining menu

Introduction

In this chapter, we discuss how to use Python to perform some basic encryption by scrambling letters. This will introduce some basic string manipulation, user input, progressing on to creating reusable modules, and graphical user interfaces.

To follow, we will create some useful Python scripts that can be added to run as the Raspberry Pi boots or an easy-to-run command that will provide quick shortcuts to common or frequently-used commands. Taking this further, we will make use of threading to run multiple tasks and ...