Tkinter messagebox - Ask Yes, No, or Cancel

Tkinter messagebox – Ask Yes, No, or Cancel

In Tkinter, the messagebox.askyesnocancel() method is used to ask the user a question with three actions: Yes, No, and Cancel.

If user clicks on Yes button, then askyesnocancel() returns True, or else if user clicks on No button, then askyesnocancel() returns False, or else if user clicks on Cancel button, then askyesnocancel() returns None. Based on the returned value, we can proceed with the required logic.

In this tutorial, you will learn how to ask a question in a message box using messagebox.askyesnocancel() method in Tkinter, with an example program.

Syntax of messagebox.askyesnocancel()

The syntax of askyesnocancel() method is

messagebox.askyesnocancel(title, message)

where

Parameter	Description
title	This string is displayed as title of the messagebox. [How a title is displayed in message box depends on the Operating System. ]
message	This string is displayed as a message inside the message box.

Examples

1. Ask user a question using messagebox

For example, consider that you have created a GUI application using Python Tkinter, and you would like to ask the user a question: Do you want to proceed?

And you would like to ask the question with three possible actions from user: Yes, No, or Cancel.

Python Program

import tkinter as tk
from tkinter import messagebox

# Create the main window
window = tk.Tk()

# Ask a question: Yes, No, or Cancel
result = messagebox.askyesnocancel("Confirmation", "Do you want to proceed?")
print(result)
if result is True:
    print("User clicked Yes")
elif result is False:
    print("User clicked No")
elif result is None:
    print("User clicked Cancel")

# Run the application
window.mainloop()

After user takes an action by clicking on any of the buttons, the return value is stored in result variable. Based on this value, we print an output.

Output

In Windows

In MacOS

If user clicks on Yes button, then we get the following output in Terminal.

Tkinter askyesnocancel() Output - When user clicks on Yes button — User clicks on Yes - Terminal output

If user clicks on No button, then we get the following output in Terminal.

Tkinter askyesnocancel() Output - When user clicks on No button — User clicks on No - Terminal output

If user clicks on Cancel button, then we get the following output in Terminal.

Tkinter askyesnocancel() Output - When user clicks on Cancel button — User clicks on Cancel - Terminal output

Summary

In this Python Tkinter tutorial, we learned how to ask a question with Yes, No, and Cancel actions in a message box in Tkinter, with examples.