What is Button Widget?

A button is the standard Tkinter widget class for implementing different kinds of buttons on GUI form a button can contain text and images. 

Example

The following Python script creates a window that contains one button with text “Say, Hello”. One method (sayHello) is associated with this button using the command option. Whenever the user clicks on the button method sayHello invoked.

You need to write following code in any text editor and then save it with .py extension. To execute the application type py ButtonExample.py command in terminal.

from tkinter import *

# Top level window 
window = Tk()

window.title("Studyfied.com")
window.geometry('350x200')

# Python function associated with 'button'
def sayHello():
    print("Hello!")

# A button
button = Button(window, text="Say, Hello", command=sayHello)
button.pack()

window.mainloop()

Output

The above code produces the following output in windows operating system.

Explanation

Following line creates a Tkinter window

from tkinter import *

window = Tk()

window.title("Studyfied.com")
window.geometry('350x200')

See explanation of Tkinter window – Tkinter top level window

It is a python function which is associated with our button. Whenever function gets called it prints ‘Hello!’ message on the terminal.

# Python function associated with 'button'
def sayHello():
    print("Hello!")

This snippet creates a button widget.

# A button
button = Button(window, text="Say, Hello", command=sayHello)
button.pack()

Properties

• window – The container window.
• text – Text to be displayed on the button widget.
• command – Method associated with the button action event.

The second line button.pack(), is geometry manager that packs widgets into rows or columns. 

Some button properties