tk-threading-boilerplate.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Thu Oct 24 12:55:41 2019

Boiler-plate code for tkinter and Python threading

@author: Benedict Wilkins AI
"""
import tkinter as tk
from threading import Thread 
import time

class Sleep:

    def __init__(self, wait):
        self.wait = wait
       
    def __enter__(self):
        self.start = self.__t()
        self.finish = self.start + self.wait
    
    def __exit__(self, type, value, traceback):
        while self.__t() < self.finish:
            time.sleep(1./1000.)

    def __t(self):
        return int(round(time.time() * 1000))

def quit():
    global finish
    finish = True
    root.destroy()

def after(t, fun, *args):
    global finish
    if not finish:
        root.after(t, fun, *args)

def run(sleep=100):
    global finish
    while not finish:
        with Sleep(sleep):
            pass #calls to after(t, fun, *args)

root = tk.Tk()
root.title("My Title")
root.protocol("WM_DELETE_WINDOW", quit)

# create some widgets

global finish
finish = False
control_thread = Thread(target=run, daemon=True)
control_thread.start()
root.mainloop()
control_thread.join()