Tkinter initially creates a resizable window for every application. Let us suppose that we want to make a non-resizable window in an application. In this case, we can use resizable(height, width) and pass the value of height=None and width=None. The method also works by passing Boolean values as resizable(False, False).
Example
#Import the required libraries
from tkinter import *
#Create an instance of tkinter frame
win= Tk()
#Set the geometry of frame
win.geometry("600x250")
#Set the resizable property False
win.resizable(False, False)
#Create a label for the window or frame
Label(win, text="Hello World!", font=('Helvetica bold',20),
anchor="center").pack(pady=20)
win.mainloop()Output
Running the above code will display a non-resizable window.
