The label widget in Tkinter is used to display text and images in a Tkinter application. In order to change the properties of the label widget such as its font-property, color, background color, foreground color, etc., you can use the configure() method.
If you want to change the size of the text in a Label widget, then you can configure the font=('font-family font-size style') property in the widget constructor.
Example
# Import the required libraries from tkinter import * import tkinter.font as tkFont # Create an instance of tkinter frame or window win=Tk() # Set the size of the tkinter window win.geometry("700x350") def font_style(): label.config(font=('Helvetica bold', 26)) # Create a Label label = Label(win, text="Click the Button to Change the Font Style.", font=('Times', 24)) label.pack() b1 = Button(win, text="Change the Label Size", command=font_style) b1.pack() win.mainloop()
Output
When you run the above code, it will display a window with a label widget and a button to change the font style of the label.
Now, click the "Change the Label Size" button and it will modify the font style of the label.