Book Image

Tkinter GUI Application Development Blueprints

By : Bhaskar Chaudhary
Book Image

Tkinter GUI Application Development Blueprints

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, media player, drawing application, chat application, screen saver, port scanner, and many 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 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 (15 chapters)
Tkinter GUI Application Development Blueprints
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Formatting widget data


Input data such as date, time, phone number, credit card number, website URL, IP number, and so on, have an associated display format. For instance, date can be better represented in an MM/DD/YYYY format.

Fortunately, it is easy to format data in the required format as the user enters it in the widget, as shown in the following screenshot:

The 8.07_formatting_entry_widget_to_display_date.py code automatically formats user input to insert forward slashes at the required places to display the date entered by a user in the MM/DD/YYYY format:

from tkinter import *

class FormatEntryWidgetDemo:

    def __init__(self, root):
        Label(root, text='Date(MM/DD/YYYY)').pack()
        self.entered_date = StringVar()
        self.date_entry = Entry(textvariable=self.entered_date)
        self.date_entry.pack(padx=5, pady=5)
        self.date_entry.focus_set()
        self.slash_positions = [2, 5]
        root.bind('<Key>', self.format_date_entry_widget)

    def format_date_entry_widget...