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Python GUI Programming with Tkinter
Python GUI Programming with Tkinter

Python GUI Programming with Tkinter: Develop responsive and powerful GUI applications with Tkinter

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Python GUI Programming with Tkinter

Designing GUI Applications with Tkinter

Software applications are developed in three repeating phases: understanding a problem, designing a solution, and implementing the solution. These phases repeat throughout the life of an application, refining and honing it until it is either optimal or obsolete.

In this chapter, we'll learn about the following topics:

  • Introducing and analyzing a scenario in the workplace that will need a software solution
  • Documenting the requirements of the solution
  • Developing a design for a piece of software that implements the solution

A problem at ABQ AgriLabs

Congratulations! Your Python skills have landed you a great data analyst job at ABQ AgriLabs. So far, your job is fairly simple: collating and doing simple data analysis on the CSV files sent to you daily from the lab's data entry staff.

There is a problem, though. You've noted with frustration that the quality of the CSV files from the lab is sadly inconsistent. Data is missing, typos abound, and often the files have to be re-entered in a time-consuming process. The lab director has noticed this as well and, knowing that you are a skilled Python programmer, she thinks you might be able to help.

You've been enlisted to program a solution that will allow the data entry staff to enter lab data into a CSV file with fewer mistakes. Your application needs to be simple and allow as little room for error as possible.

...

Documenting specification requirements

Now that you've assembled your data about the application, it's time to write up a specification. Software specifications can range from very formal, contractual documents that include time estimates and deadlines, to a simple set of descriptions of what the programmer intends to build. The purpose of the specification is to give everyone involved in the project a point of reference for what the developer will create. It spells out the problem to be solved, the functionality required, and the scope of what the program should and shouldn't do.

Your scenario is rather informal and your application is simple, so you do not need a detailed formal specification in this case. However, a basic write-up of what you know will make sure that you, your boss, and the users are all on the same page.

...

Designing the application

With our specification in hand and our requirements clear, it's time to start designing our solution. We'll start with the form GUI component itself.

We're going to create a basic design for our form in the following three steps:

  1. Determine the appropriate input widget for each data field
  2. Group together related items to create a sense of organization
  3. Layout our widgets in their groups on a form sheet

Exploring Tkinter input widgets

Like all toolkits, Tkinter offers a variety of input widgets for different kinds of data. However, ttk offers additional widget types and enhances some (but not all!) of Tkinter's native widgets. The following table offers advice on which widgets...

Summary

In this chapter, you worked through the first two phases of application development: understanding the problem and designing a solution. You learned how to develop an application specification by interviewing users and examining the data and requirements, creating an optimal form layout for your users, and learned which widgets are available in Tkinter for dealing with different kinds of input data. Most importantly, you learned that developing an application doesn't begin with code, but with research and planning.

In the next chapter, you'll create a basic implementation of your designs with Tkinter and Python. We will get familiar with the Tkinter widgets required to create our form, build the form, and place the form within the application. We'll also learn how to make our form trigger callback actions and discover how to structure our code to ensure...

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Key benefits

  • • Explore Tkinter's powerful features to easily design and customize your GUI application
  • • Learn the basics of 2D and 3D animation in GUI applications.
  • • Learn to integrate stunning Data Visualizations using Tkinter Canvas and Matplotlib.

Description

Tkinter is a lightweight, portable, and easy-to-use graphical toolkit available in the Python Standard Library, widely used to build Python GUIs due to its simplicity and availability. This book teaches you to design and build graphical user interfaces that are functional, appealing, and user-friendly using the powerful combination of Python and Tkinter. After being introduced to Tkinter, you will be guided step-by-step through the application development process. Over the course of the book, your application will evolve from a simple data-entry form to a complex data management and visualization tool while maintaining a clean and robust design. In addition to building the GUI, you'll learn how to connect to external databases and network resources, test your code to avoid errors, and maximize performance using asynchronous programming. You'll make the most of Tkinter's cross-platform availability by learning how to maintain compatibility, mimic platform-native look and feel, and build executables for deployment across popular computing platforms. By the end of this book, you will have the skills and confidence to design and build powerful high-end GUI applications to solve real-world problems.

Who is this book for?

This book will appeal to developers and programmers who would like to build GUI-based applications. Knowledge of Python is a prerequisite.

What you will learn

  • • Implement the tools provided by Tkinter to design beautiful GUIs
  • • Discover cross-platform development through minor customizations in your existing application
  • • Visualize graphs in real time as data comes in using Tkinter s animation capabilities
  • • Use PostgreSQL authentication to ensure data security for your application
  • • Write unit tests to avoid regressions when updating code
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Publication date : May 15, 2018
Length: 452 pages
Edition : 1st
Language : English
ISBN-13 : 9781788835886
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Table of Contents

16 Chapters
Introduction to Tkinter Chevron down icon Chevron up icon
Designing GUI Applications with Tkinter Chevron down icon Chevron up icon
Creating Basic Forms with Tkinter and ttk Widgets Chevron down icon Chevron up icon
Reducing User Error with Validation and Automation Chevron down icon Chevron up icon
Planning for the Expansion of Our Application Chevron down icon Chevron up icon
Creating Menus with Menu and Tkinter Dialogs Chevron down icon Chevron up icon
Navigating Records with Treeview Chevron down icon Chevron up icon
Improving the Look with Styles and Themes Chevron down icon Chevron up icon
Maintaining Cross-Platform Compatibility Chevron down icon Chevron up icon
Creating Automated Tests with unittest Chevron down icon Chevron up icon
Improving Data Storage with SQL Chevron down icon Chevron up icon
Connecting to the Cloud Chevron down icon Chevron up icon
Asynchronous Programming with Thread and Queue Chevron down icon Chevron up icon
Visualizing Data Using the Canvas Widget Chevron down icon Chevron up icon
Packaging with setuptools and cx_Freeze Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon

Customer reviews

Top Reviews
Rating distribution
Full star icon Full star icon Full star icon Half star icon Empty star icon 3.9
(22 Ratings)
5 star 54.5%
4 star 13.6%
3 star 9.1%
2 star 9.1%
1 star 13.6%
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Vince Feb 02, 2021
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Non ho letto che le prima 50 pagine e già adoro questo libro scritto benissimo, spero possa aiutarmi a capire bene tkinter.
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Amazon Customer Jul 15, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Buch hat mir sehr gut gefallen. Einer der wenigen Bücher wo Lösungen nicht nur angedeutet werden, sondern komplett gezeigt und gut erklärt werden.
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Adam Beeblebrock Mar 04, 2021
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good
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Mussolin Diego Jul 19, 2020
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Libro di testo centrato sugli argomenti che sono richiesti. Scorrevole e pieno di esempi. Come tutti i libri di testo richiede costanza e continuità nella lettura per un apprendimento efficace.
Amazon Verified review Amazon
Rich Shepard Feb 23, 2019
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I had read a couple of Packt books in the past and vowed to avoid this publisher. The chunky format appeared highly condescending, aimed at the totally naive reader. So I was apprehensive about purchasing this one. I am pleasantly surprised to learn that my worries were misplaced.Alan Moore has written an outstanding and extremely useful book. I've used wxPython for years and cannot explain why I ignored tkinter all this time, so I searched for resources from which to learn tkinter. This book is a benchmark for how to pack a lot of clear explanation is an easy to hold and read book. The content, sequence of topics. and writing style are ideal for the subject.As a bonus for long-time linux users like me is Alan's use of linux for all examples (other than discussing cross-platform issues, of course). Seems like most authors of Python books don't know or use linux so those of us who do need to translate as we read.When you want to learn how to write robust, effective GUIs for Python3 applications (especially those with a database back end, buy this book.
Amazon Verified review Amazon
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