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

Using modules and packages to share your code

Whenever you write some Python source code, the code you create will perform a task of some sort. Maybe your code analyzes some data, stores some information into a file, or prompts the user to choose an item from a list. It doesn't matter what your code is—ultimately, your code does something.

Often, this something is very specific. For example, you might have a function that calculates compound interest, generates a Venn diagram, or displays a warning message to the user. Once you've written this code, you can then use it wherever you want in your own program. This is the simply abstraction pattern that was described in the previous chapter: you separate what you want to do from how you do it.

Once you've written your function, you can then call it whenever you want to perform that task. For example, you can call your display_warning() function whenever you want to display a warning to the user, without worrying about the details of how the warning...