Book Image

Python GUI Programming with Tkinter, 2nd edition - Second Edition

By : Alan D. Moore
4.5 (2)
Book Image

Python GUI Programming with Tkinter, 2nd edition - Second Edition

4.5 (2)
By: Alan D. Moore

Overview of this book

Tkinter is widely used to build GUIs in Python due to its simplicity. In this book, you’ll discover Tkinter’s strengths and overcome its challenges as you learn to develop fully featured GUI applications. Python GUI Programming with Tkinter, Second Edition, will not only provide you with a working knowledge of the Tkinter GUI library, but also a valuable set of skills that will enable you to plan, implement, and maintain larger applications. You’ll build a full-blown data entry application from scratch, learning how to grow and improve your code in response to continually changing user and business needs. You’ll develop a practical understanding of tools and techniques used to manage this evolving codebase and go beyond the default Tkinter widget capabilities. You’ll implement version control and unit testing, separation of concerns through the MVC design pattern, and object-oriented programming to organize your code more cleanly. You’ll also gain experience with technologies often used in workplace applications, such as SQL databases, network services, and data visualization libraries. Finally, you’ll package your application for wider distribution and tackle the challenge of maintaining cross-platform compatibility.
Table of Contents (22 chapters)
19
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20
Index
Appendices

HTTP using urllib

Every time you open a website in your browser, you're using the Hypertext Transfer Protocol, or HTTP. HTTP was created over 30 years ago as a way for web browsers to download HTML documents, but has evolved into one of the most popular client-server communication protocols for any number of purposes.

Not only do we use it in the browser to view everything from plain text to streaming video across the internet, but applications can also use it to transfer data, initiate remote procedures, or distribute computing tasks.

HTTP transaction fundamentals

A basic HTTP transaction between a client and server goes like this:

  1. First, the client creates a request, which it will send to the server. The request contains the following:
    • A URL, which specifies the host, port, and path to which the request is being made.
    • A method, also known as a verb, which tells the server what operation the client is requesting. The most common methods...