Loading Images in Tkinter using PIL

In this article, we will learn how to load images from user system to Tkinter window using PIL module. This program will open a dialogue box to select the required file from any directory and display it in the tkinter window.
Install the requirements – 
Use this command to install Tkinter :

pip install python-tk

Use this command to install PIL :

pip install pillow

Importing modules – 

Python3

from tkinter import *

# loading Python Imaging Library
from PIL import ImageTk, Image

# To get the dialog box to open when required
from tkinter import filedialog

Note: The ImageTk module contains support to create and modify Tkinter BitmapImage and PhotoImage objects from PIL images and filedialog is used for the dialog box to appear when you are opening file from anywhere in your system or saving your file in a particular position or place. 

Function to create a Tkinter window consisting of a button – 

Python3

# Create a window
root = Tk()

# Set Title as Image Loader
root.title("Image Loader")

# Set the resolution of window
root.geometry("550x300 + 300 + 150")

# Allow Window to be resizable
root.resizable(width = True, height = True)

# Create a button and place it into the window using grid layout
btn = Button(root, text ='open image', command = open_img).grid(
                                        row = 1, columnspan = 4)
root.mainloop()

The Button object is created with text ‘open image’. On clicking it the open_image function will be invoked. 
Function to place the image onto the window – 

Python3

def open_img():
    # Select the Imagename  from a folder
    x = openfilename()

    # opens the image
    img = Image.open(x)

    # resize the image and apply a high-quality down sampling filter
    img = img.resize((250, 250), Image.ANTIALIAS)

    # PhotoImage class is used to add image to widgets, icons etc
    img = ImageTk.PhotoImage(img)

    # create a label
    panel = Label(root, image = img)

    # set the image as img
    panel.image = img
    panel.grid(row = 2)

The openfilename function will return the file name of image. 
Function to return the file name chosen from a dialog box – 

Python3

def openfilename():

    # open file dialog box to select image
    # The dialogue box has a title "Open"
    filename = filedialog.askopenfilename(title ='"pen')
    return filename

To run this code, save it by the extension .py and then open cmd (command prompt) and move to the location of the file saved and then write the following – 

python "filename".py 

and press enter and it will run. Or can be run directly by simply double-clicking your .py extension file. 

Output:
https://media.geeksforgeeks.org/wp-content/uploads/20191121233525/Screencast-from-Thursday-21-November-2019-111137-IST2.webm