Book Image

Tkinter GUI Application Development Blueprints - Second Edition

By : Bhaskar Chaudhary
Book Image

Tkinter GUI Application Development Blueprints - Second Edition

By: Bhaskar Chaudhary

Overview of this book

Tkinter is the built-in GUI package that comes with standard Python distributions. It is a cross-platform package, which means you build once and deploy everywhere. It is simple to use and intuitive in nature, making it suitable for programmers and non-programmers alike. This book will help you master the art of GUI programming. It delivers the bigger picture of GUI programming by building real-world, productive, and fun applications such as a text editor, drum machine, game of chess, audio player, drawing application, piano tutor, chat application, screen saver, port scanner, and much more. In every project, you will build on the skills acquired in the previous project and gain more expertise. You will learn to write multithreaded programs, network programs, database-driven programs, asyncio based programming and more. You will also get to know the modern best practices involved in writing GUI apps. With its rich source of sample code, you can build upon the knowledge gained with this book and use it in your own projects in the discipline of your choice.
Table of Contents (12 chapters)

Building the chord finder section

Now that we have had a glimpse of working with JSON files, this should be easy. Let's take a look at the first few lines of the chords.json file from the json directory:

{
"Major" : [0, 4, 7],
"Minor" : [0, 3, 7],
"Sus4" : [0, 5, 7],
"5" : [0, 4, 6],
"Diminished" : [0, 3, 6],
...
}

This is very similar to the scales structure. Let's say we want to figure out what the C# major chord would look like. So we start with the C# key, which is 0. Then we look at the list of major chords, which read: [0, 4, 7]. So starting at C# the next key to highlight is 4 semitones above and the next is 7 semitones above C#. So the final chord structure for the C# major chord would be:

C#,    (C# + 4 semitones) ,      (C# + 7 semitones) 

The GUI is also very similar to the scales section:

We begin by adding...