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
Other Books You May Enjoy
20
Index
Appendices

SQL concepts

SQL databases are made up of tables. A table is something like a CSV or spreadsheet file, in that it has rows representing individual items and columns representing data values associated with each item. A SQL table has some important differences from a spreadsheet, though:

  • First, each column in the table is assigned a data type, which is strictly enforced. Just as Python will produce an error when you try to convert "abcd" to an int or 0.03 into a date, a SQL database will return an error if you try to insert letters into a numeric column or decimal values into a date column. SQL databases typically support basic data types like text, numbers, dates and times, Boolean values, and binary data; in addition, some implementations have specialized data types for things like IP addresses, JSON data, currency, or images.
  • SQL tables can also have constraints, which further enforce the validity of data inserted into the table. For example, a column...