How to Change Label Text on Button Click in Tkinter

In this tutorial, we are going to see different ways to change label text on button click in Tkinter Python.

• Method 1: Using StringVar constructor
• Method 2: Using ‘text’ property of the label widget

 
 

Change Label Text Using StringVar

StringVar is a type of Tkinter constructor to create a variable of type String. After binding the StringVar variable to the Tkinter Label widgets, Tkinter will update this widget when the variable is modified.

import tkinter as tk

def changeText():
	text.set("Welcome to StackHowTo!")  


gui = tk.Tk()
gui.geometry('300x100')  

text = tk.StringVar()
text.set("Hello World!")

label = tk.Label(gui, textvariable=text)
label.pack(pady=20)

button = tk.Button(gui, text="Change the text", command=changeText)
button.pack()

gui.mainloop()

Output:

 
 

Change Label Text Using ‘text’ Property

Another way to change the text of the Tkinter label is to change the ‘text’ property of the label.

import tkinter as tk

def changeText():
	label['text'] = "Welcome to StackHowTo!"   


gui = tk.Tk()
gui.geometry('300x100')  

label = tk.Label(gui, text="Hello World!")
label.pack(pady=20)

button = tk.Button(gui, text="Change the text", command=changeText)
button.pack()

gui.mainloop()

Output:

 
 
We can also change the ‘text’ property with tk.Label.configure() method as shown below. It works the same way with the codes above.

import tkinter as tk

def changeText():  
	label.configure(text="Welcome to StackHowTo!") 


gui = tk.Tk()
gui.geometry('300x100')  

label = tk.Label(gui, text="Hello World!")
label.pack(pady=20)

button = tk.Button(gui, text="Change the text", command=changeText)
button.pack()

gui.mainloop()

 
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