December 2011
Beginner
508 pages
13h 42m
English
Content preview from Introduction to Computing Using Python: An Application Development FocusBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
CHAPTER 9
Graphical User Interfaces
9.1 Basics of tkinter GUI Development
9.2 Event-Based tkinter Widgets
9.5 Case Study: Developing a Calculator
Solutions to Practice Problems
THIS CHAPTER INTRODUCES graphical user interface (GUI) development.
When you use a computer application—whether it is a web browser, an email client, a computer game, or your Python integrated development environment (IDE)—you typically do so through a GUI, using a mouse and a keyboard. There are two reasons for using a GUI: A GUI gives a better overview of what an application does, and it makes it easier to use the application.
In order to develop GUIs, a developer will require a GUI application programming interface (API) that provides the necessary GUI toolkit. There are several GUI APIs for Python; in this text we use tkinter, a module that is part of Python's Standard Library.
Beyond the development of GUIs using tkinter, this chapter also covers fundamental software development techniques that are naturally used in GUI development. We introduce event-driven programming, an approach for developing applications in which tasks are executed in response to events (such a button clicks). We also learn that GUIs are ideally developed as user-defined classes, and we take the opportunity to once again showcase the benefit of object-oriented programming (OOP).
9.1 Basics of tkinter GUI Development
A graphical user interface (GUI) consists ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.