Countdown Timer in Python

1. Importing the required Libraries and Modules:
# import the time module
from threading import Timer
import time
import tkinter as tk
from tkinter import *
from datetime import datetime

2. Creating the GUI window (Labels, Button and Entry Field):
#creating a window
window = Tk()
window.geometry('600x600')#giving size
window.title('PythonGeeks')#giving title
head=Label(window, text="Countdown Clock and Timer", font=('Calibri 15'))# a label
head.pack(pady=20)

3. Displaying the current time
#to print current time
now = datetime.now()
current_time = now.strftime("%H:%M:%S")
Label(window,text=current_time).pack()

4. Creating the Timer and Countdown Function
def countdown():
    t=count.get()
    while t:
        mins, secs = divmod(t, 60)
        display = ('{:02d}:{:02d}'.format(mins, secs))
        time.sleep(1)#sleep time 1 sec
        t -= 1
        Label(window,text= display).pack()
     
    Label(window,text="Time-Up",font=('bold', 20)).place(x=250,y=290)

5. Adding Desktop Notification
#display notification on desktop
    toast = ToastNotifier()#create toast variable
    toast.show_toast("Notification","Timer is Off",duration = 20,icon_path = NONE,threaded = True,)#show toast

6. Adding a Beep Sound
if (check.get()==True):#if the value of check is true    
            winsound.Beep(440, 1000)#beep sound