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

Arithmetic operations


Python enables performing all the standard arithmetic operations. Let's launch the Python interpreter and learn more:

  • Addition: Two numbers can be added using the + operand. The result is printed on the screen. Try the following example using the python interpreter:
       >>>123+456 
       579
  • Subtraction: Two numbers can be added using the - operand:
       >>>456-123 
       333 
       >>>123-456 
       -333
  • Multiplication: Two numbers can be multiplied as follows:
       >>>123*456 
       56088
  • Division: Two numbers can be divided as follows:
       >>>456/22 
       20.727272727272727
       >>>456/2.0 
       228.0 
       >>>int(456/228) 
       2
  • Modulus operator: In Python, the modulus operator (%) returns the remainder of a division operation:
       >>>4%2 
       0 
       >>>3%2 
       1
  • The floor operator (//) is the opposite of the modulus operator. This operator returns the floor...