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Raspberry Pi 3 Cookbook for Python Programmers - Third Edition
book

Raspberry Pi 3 Cookbook for Python Programmers - Third Edition

by Steven Lawrence Fernandes, Tim Cox
April 2018
Beginner content levelBeginner
552 pages
13h 58m
English
Packt Publishing
Content preview from Raspberry Pi 3 Cookbook for Python Programmers - Third Edition

How it works...

We create the Tkinter window as we did before; however, instead of defining all the items separately, we create a special class for the application buttons.

The class we create acts as a blueprint or specification of what we want the appButtons items to include. Each item will consist of a string value for app_cmd, a function called startApp(), and an __init__() function. The __init__() function is a special function (called a constructor) that is called when we create an appButtons item; it will allow us to create any setup that is required.

In this case, the __init__() function allows us to create a new Tkinter button with the text to be set to an item in app_list and the command to be called in the startApp() function when ...

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Publisher Resources

ISBN: 9781788629874Supplemental Content