Steps to Update the Image of a Tkinter Label Widget

To update the image of a Label widget, follow these steps:

Import module

First step is to import the Tkinter module to create the Tkinter window and various widgets.

import tkinter as tk

Create Application Window

Then create the Tkinter application window which will contain all the necessary Tkinter widgets such as label image and the button to update the image.

root = tk.Tk()
root.title("w3wiki")

Load the Image

Load the images that will be displayed on the application window. This can be done by using the PhotoImage class which takes the path of the image file as parameter.

image = tk.PhotoImage(file="path_to_image")

Add Widgets

Create the label widget, which is used to add the image on the Tkinter window. The Label() class takes two parameters, the first is the root window on which the label widget is to be displayed. The second is the image that we want to set as the label.

label = tk.Label(root, image=image)
label.pack()

Create a button which is used to update the image. When the user clicks the button, a function gets called which will update the image in the label widget. The ‘command’ option of the button class calls the function to update image.

button = tk.Button(root, text="Update image", command=update_image_in_label)
button.pack()

Update Image

The image can be updated in the label widget by using the config() method. The option ‘image’ is used in the config() method assigning to a another PhotoImage variable.

label.config(image=image_to_update)

Run the Application

Once everything is done, we can run the application window and update the image in a label with just a click of a button.

root.mainloop()

Tkinter is a GUI-creating module in Python that is used to create many applications. It has many useful widgets such as Label, Checkbutton, Button, Checkbox, and more. In this article, we will discuss how we can update an image from the Label widget in Tkinter in Python.