Book Image

Modular Programming with Python

By : Erik Westra
Book Image

Modular Programming with Python

By: Erik Westra

Overview of this book

Python has evolved over the years and has become the primary choice of developers in various fields. The purpose of this book is to help readers develop readable, reliable, and maintainable programs in Python. Starting with an introduction to the concept of modules and packages, this book shows how you can use these building blocks to organize a complex program into logical parts and make sure those parts are working correctly together. Using clearly written, real-world examples, this book demonstrates how you can use modular techniques to build better programs. A number of common modular programming patterns are covered, including divide-and-conquer, abstraction, encapsulation, wrappers and extensibility. You will also learn how to test your modules and packages, how to prepare your code for sharing with other people, and how to publish your modules and packages on GitHub and the Python Package Index so that other people can use them. Finally, you will learn how to use modular design techniques to be a more effective programmer.
Table of Contents (16 chapters)
Modular Programming with Python
About the Author
About the Reviewer

Designing the inventory control system

If you step back and review our inventory control program's functionality, you can see that there are three fundamental types of activity that this program needs to support:

  • Storing information

  • Interacting with the user

  • Generating reports

While this is very general, this breakdown is helpful because it suggests a possible way of organizing our program code. For example, the part of the system responsible for storing information could store the lists of products, locations, and inventory items and make this information available as required. Similarly, the part of the system responsible for interacting with the user could prompt the user to choose an action to perform, ask them to select a product code, and so on. Finally, the area of the system responsible for generating reports would be able to generate each of the desired types of report.

Thinking about the system in this way, it becomes clear that each of these three parts of the system could be implemented...