How to update a Button widget in Tkinter?

We can update a Button widget in Tkinter in various ways, for example, we can change its size, change its background color, or remove its border, etc. In the following example, we will create three Button widgets and each of the buttons, upon clicking, will call a different function to update their features.

Example

# Import the required library
from tkinter import *
from tkinter import ttk

# Create an instance of tkinter frame
win = Tk()

# Define geometry of the window
win.geometry("700x300")

# Function to Increase the Size of the Button
def Button_Size():
   button1.configure(font=('Calibri 20 bold'))

# Function to change the background color
def Button_Color():
   button2.configure(bg='green')

# Function to Remove Border
def Button_Border():
   button3.configure(borderwidth=0)

# First Button
button1=Button(win, text="Increase the Button Size",
command=Button_Size)
button1.pack(pady=20)

# Second Button
button2=Button(win, text="Change the Background Color",
command=Button_Color)
button2.pack(pady=20)

# Third Button
button3 = Button(win, text="Remove the Border",
command=Button_Border)
button3.pack(pady=20)

win.mainloop()

Output

Upon execution, it will first show the following window −

When you click "Increase the Button Size", it will produce the following output −

Upon clicking "Change the Background Color", it will produce the following output −

If you click "Remove the Border", it will produce the following output −