Python. How to ensure that a thread is closed by closing a Tkinter window?

Question

Python

Can you please tell me how to ensure that the created separate thread is closed after closing the Tkinter window? This construction works, but in case of an exception crash, window.mainloop() may not be overstepped and the thread will continue to thresh, checked.

from tkinter import *
import threading, time

run = True

def clik():
    while run:  
        print('loop')
        time.sleep(2)
   
Potok = threading.Thread(target = clik)

window = Tk()
window.geometry('300x300+500+500')
window.title("Thread Loop")

btn = Button(window, text="Старт!", command = lambda: Potok.start())
btn.grid(column=1, row=0)

window.mainloop()
run = False

Answer 1

threading.Thread(target = clik, daemon=True)