Practical Programming, 3rd Edition

Using Module tkinter

Every tkinter program consists of these things:

• Windows, buttons, scrollbars, text areas, and other widgets—anything that you can see on the computer screen. (Generally, the term widget means any useful object; in programming, it is short for “window gadget.”)

• Modules, functions, and classes that manage the data that is being shown in the GUI—you are familiar with these; they are the tools you’ve seen so far in this book.

• An event manager that listens for events such as mouse clicks and keystrokes and reacts to these events by calling event handler functions.

Here is a small but complete tkinter program:

import tkinter
window = tkinter.Tk()
window.mainloop()

Tk is a class that represents the root window