Book Image

Python Programming with Raspberry Pi

By : Sai Yamanoor, Srihari Yamanoor
Book Image

Python Programming with Raspberry Pi

By: Sai Yamanoor, Srihari Yamanoor

Overview of this book

Raspberry Pi Zero is a super-small and super-affordable product from Raspberry Pi that is packed with a plethora of features and has grabbed the notice of programmers, especially those who use Python. This step-by-step guide will get you developing practical applications in Python using a Raspberry Pi Zero. It will become a valuable resource as you learn the essential details of interfacing sensors and actuators to a Raspberry Pi, as well as acquiring and displaying data. You will get started by writing a Python program that blinks an LED at 1-second intervals. Then you will learn to write simple logic to execute tasks based upon sensor data (for example, to control a motor) and retrieve data from the web (such as to check e-mails to provide a visual alert). Finally, you will learn to build a home automation system with Python where different appliances are controlled using the Raspberry Pi. The examples discussed in each chapter of this book culminate in a project that help improve the quality of people’s lives.
Table of Contents (17 chapters)
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

OOP in Python


OOP is a concept that helps simplifying your code and eases application development. It is especially useful in reusing your code. Object-oriented code enables reusing your code for sensors that use the communications interface. For example, all sensors that are equipped with a UART port could be grouped together using object-oriented code.

One example of OOP is the GPIO Zero library (https://www.raspberrypi.org/blog/gpio-zero-a-friendly-python-api-for-physical-computing/) used in previous chapters. In fact, everything is an object in Python.

Object-oriented code is especially helpful in collaboration with other people on a project. For example, you could implement a sensor driver using object-oriented code in Python and document its usage. This enables other developers to develop an application without paying attention to the nitty-gritty detail behind the sensor's interface. OOP provides modularity to an application that simplifies application development. We are going to review...