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

Setting debug watches

In modern Integrated Development Environments (IDEs), such as the PyDev plugin in Eclipse or another IDE such as NetBeans, we can set debug watches to monitor the state of our GUI during the execution of our code.

This is very similar to the Microsoft IDEs of Visual Studio and the more recent versions of Visual Studio.NET.


Setting debug watches is a very convenient way to help our development efforts.

Getting ready

In this recipe, we will reuse the Python GUI we developed in the earlier recipes. We will step through the code we had previously developed, and we will set debug watches.

How to do it…


While this recipe applies to the PyDev plugin in the Java-based Eclipse IDE, its principles also apply to many modern IDEs.

The first position where we might wish to place a breakpoint is at the place where we make our GUI visible by calling the tkinter main event loop.

The green balloon symbol on the left is a breakpoint in PyDev/Eclipse. When we execute our code in debug...