Welcome folks today in this blog post we will be closing window using root.destroy() method using button inside functions and classes in tkinter gui desktop app in python. All the full source code of the application is given below.

Get Started

In order to get started you need to install the below library using the pip command as shown below

pip install tkinter

After installing this library you need to make an app.py file and copy paste the following code

app.py

First of all we will be using the root.destroy command to the button

# using destroy Non-Class method 
from tkinter import *
  
# Creating the tkinter window 
root = Tk() 
root.geometry("200x100") 
  
# Button for closing 
exit_button = Button(root, text="Exit", command=root.destroy) 
exit_button.pack(pady=20) 
  
root.mainloop()

Now we will be using functions to close the window

app.py

# Python program to create a close button 
# using destroy Non-Class method 
from tkinter import *
  
# Creating the tkinter window 
root = Tk() 
root.geometry("200x100") 
  
# Function for closing window 
  
  
def Close(): 
    root.destroy() 
  
  
# Button for closing 
exit_button = Button(root, text="Exit", command=Close) 
exit_button.pack(pady=20) 
  
root.mainloop()

Now we will be using the classes to close the tkinter window

app.py

# Python program to create a close button 
# using destroy Class method 
from tkinter import *

# Class for tkinter window 


class Window(): 
    def __init__(self): 

        # Creating the tkinter Window 
        self.root = Tk() 
        self.root.geometry("200x100") 

        # Button for closing 
        exit_button = Button(self.root, text="Exit", command=self.root.destroy) 
        exit_button.pack(pady=20) 

        self.root.mainloop() 


# Running test window 
test = Window()

If you execute the above python script by typing the below command

python app.py