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
Packt Upsell

Implementing the application

To start our application script, create a folder called ABQ data entry and a file inside it called

We'll start with the following boilerplate code we learned in Chapter 1, Introduction to Tkinter:

import tkinter as tk
from tkinter import ttk

# Start coding here

class Application(tk.Tk):
    """Application root window"""

if __name__ == "__main__":
    app = Application()

Running this script should give you a blank Tk window.

Saving some time with a LabelInput class

Every input widget on our form has a label associated with it. In a small application, we can just create the label and input separately, then add each to the parent frame as follows:

form = Frame()
label = Label(form, text='Name')
name_input = Entry(form)
label.grid(row=0, column=0)
name_input.grid(row=1, column=0)

That works fine and you could do it that way for your application, but it also creates a lot of tedious, repetitious code, and moving inputs around means...