Book Image

Python GUI Programming with Tkinter.

By : Alan D. Moore
Book Image

Python GUI Programming with Tkinter.

By: Alan D. Moore

Overview of this book

Tkinter is a lightweight, portable, and easy-to-use graphical toolkit available in the Python Standard Library, widely used to build Python GUIs due to its simplicity and availability. This book teaches you to design and build graphical user interfaces that are functional, appealing, and user-friendly using the powerful combination of Python and Tkinter. After being introduced to Tkinter, you will be guided step-by-step through the application development process. Over the course of the book, your application will evolve from a simple data-entry form to a complex data management and visualization tool while maintaining a clean and robust design. In addition to building the GUI, you'll learn how to connect to external databases and network resources, test your code to avoid errors, and maximize performance using asynchronous programming. You'll make the most of Tkinter's cross-platform availability by learning how to maintain compatibility, mimic platform-native look and feel, and build executables for deployment across popular computing platforms. By the end of this book, you will have the skills and confidence to design and build powerful high-end GUI applications to solve real-world problems.
Table of Contents (23 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Contributors
Preface
Index

Splitting our application into multiple files


Now that our directory structure is in order, we need to start dissecting our application script and splitting it up into our module files. We'll also need to create our model class. Open up your abq_data_entry.py file from Chapter 4, Reducing User Error with Validation and Automation, and let's begin!

Creating the models module

When your application is all about data, it's good to begin with the model. Remember that the job of a model is to manage the storage, retrieval, and processing of our application's data, usually with respect to its persistent storage format (in this case, CSV). To accomplish this, our model should contain all the knowledge about our data.

Currently, our application has nothing like a model; knowledge about the application's data is scattered into the form fields, and the Application object simply takes whatever data the form contains and stuffs it directly into a CSV file when a save operation is requested. Since we aren...