How to update the image of a tkinter label widget?

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import tkinter as tk
from tkinter import PhotoImage

# Create a tkinter window
root = tk.Tk()

# Load the initial image
original_image = PhotoImage(file='image1.png')

# Create a label widget with the original image
label = tk.Label(root, image=original_image)
label.pack()

def update_image():
    # Load the new image
    new_image = PhotoImage(file='image2.png')
    
    # Update the label widget with the new image
    label.config(image=new_image)
    
    # Update the label widget to display the new image
    label.update_idletasks()

# Create a button to update the image
button = tk.Button(root, text='Update Image', command=update_image)
button.pack()

# Run the tkinter main loop
root.mainloop()