Timer.py

import arcade
from tkinter import Tk, messagebox
import sys


class Timer(arcade.Window):
    def __init__(self, width=300, height=150):
        super().__init__(width, height)
        self.time = 0.0

    def Window(self, time):
        arcade.set_background_color(arcade.color.BLACK)
        self.time = time

    def on_draw(self):
        arcade.start_render()
        min = int(self.time) // 60
        sec = int(self.time) % 60
        result = f"Time : {min}:{sec}"
        arcade.draw_text(result, 60, 60, arcade.color.RED, 35)
        if min < 0:
            root = Tk()
            root.withdraw()
            messagebox.showinfo("Info Box", "Countdown Has Reached Zero")
            sys.exit(0)

    def on_update(self, new_time):
        self.time = self.time - new_time


if __name__ == "__main__":
    try:
        time = int(input("Enter how many seconds you want to count : "))
    except:
        print("ERROR : ENTER ONLY INTEGER VALUES")
    else:
        timer = Timer()
        timer.Window(time)
        arcade.run()