Book Image

Python GUI Programming Cookbook, Second Edition - Second Edition

By : Burkhard Meier
Book Image

Python GUI Programming Cookbook, Second Edition - Second Edition

By: Burkhard Meier

Overview of this book

Python is a multi-domain, interpreted programming language. It is a widely used general-purpose, high-level programming language. It is often used as a scripting language because of its forgiving syntax and compatibility with a wide variety of different eco-systems. Python GUI Programming Cookbook follows a task-based approach to help you create beautiful and very effective GUIs with the least amount of code necessary. This book will guide you through the very basics of creating a fully functional GUI in Python with only a few lines of code. Each and every recipe adds more widgets to the GUIs we are creating. While the cookbook recipes all stand on their own, there is a common theme running through all of them. As our GUIs keep expanding, using more and more widgets, we start to talk to networks, databases, and graphical libraries that greatly enhance our GUI’s functionality. This book is what you need to expand your knowledge on the subject of GUIs, and make sure you’re not missing out in the long run.
Table of Contents (18 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback

How to use design patterns successfully

In this recipe, we will create widgets for our Python GUI by using the factory design pattern. In the previous recipes, we created our widgets either manually one at a time or dynamically in a loop. Using the factory design pattern, we will use the factory to create our widgets.

Getting ready

We will create a Python GUI that has three buttons, each having different styles.

How to do it…

Towards the top of our Python GUI module, just below the import statements, we create several classes:

import tkinter as tk 
from tkinter import ttk 
from tkinter import scrolledtext 
from tkinter import Menu 

class ButtonFactory(): 
    def createButton(self, type_): 
        return buttonTypes[type_]() 

class ButtonBase():      
    relief     ='flat' 
    foreground ='white' 
    def getButtonConfig(self): 
        return self.relief, self.foreground 

class ButtonRidge(ButtonBase): 
    relief     ='ridge' 
    foreground ='red'         

class ButtonSunken(ButtonBase...