Welcome folks today in this post we will be displaying popup window to user whenever they clicked button inside the desktop app in tkinter. All the full source code of the application will be given below.

Get Started

First of all just install the following library using the pip command as shown below

pip install tkinter

And then you want to make an app.py file and copy paste the following code

app.py

# import everything from tkinter module 
from tkinter import *

# import messagebox from tkinter module 
import tkinter.messagebox 

# create a tkinter root window 
root = tkinter.Tk() 

# root window title and dimension 
root.title("When you press a button the message will pop up") 
root.geometry('500x300') 

# Create a messagebox showinfo 

def onClick(): 
    tkinter.messagebox.showinfo("Welcome to Coding Shiksha.", "Hi I'm am Gautam") 

# Create a Button 
button = Button(root, text="Click Me", command=onClick, height=5, width=10) 

# Set the position of button on the top of window. 
button.pack(side='bottom') 
root.mainloop()

And now if you execute this python script by typing the below command

python app.py