Join Threads running inside Tkinter.Tk().mainloop

Question

I am working with tkinter and within the __init__() method of my Windows class, where I launch two threads that execute a method.

My problem is that I can't figure out where to call .join() so that those threads don't continue their execution once the main window is destroyed through Tk().destroy() method.

***call .join()so that those threads don continue***: `.join()` don't terminate a `Thread`. Read [terminate an Thread controlled](https://stackoverflow.com/a/43686996/7414759) — stovfl, May 06 '20 at 17:32
When you create the Threads, make them "daemonic" before starting them. This will cause them to be automatically terminated when the main thread exits. It's mentioned in the [Thread documentation](https://docs.python.org/3/library/threading.html#threading.Thread). — martineau, May 06 '20 at 17:45

score 0 · Answer 1 · answered May 06 '20 at 17:30

Tkinter.Tk().mainloop() is blocks the program from continuing while the screen updates. After calling Tk().destroy(), it will unblock and continue the program as normal, allowing you to call thread.join() there. Here as a demo of for code executing after:

from tkinter import Tk

root = Tk()

def f():
    root.destroy()

root.after(3000,f)
root.mainloop()
print("Join Thread Here")

Join Threads running inside Tkinter.Tk().mainloop

1 Answers1