Python Script to Create Countdown Timer in Tkinter

In this tutorial let’s write Python Script to Create Countdown Timer in Tkinter.

Python provides numerous possibilities for creating a graphical user interface . Tkinter is a Python wrapper for the Tk GUI toolkit. It is the standard Python interface to the Tk GUI toolkit to put it another way, Tkinter is a Python Graphical User Interface.

Code to Create Countdown Timer in Tkinter

app.py

import time
from tkinter import *
from tkinter import messagebox


# create window
root = Tk()

# window size
root.geometry("300x250")

# title
root.title("Time Counter")
hour=StringVar()
minute=StringVar()
second=StringVar()

# default value as 0
hour.set("00")
minute.set("00")
second.set("00")

# inputs from the user
hourEntry= Entry(root, width=4, font=("Arial",19,""),textvariable=hour)
hourEntry.place(x=80,y=20)

minuteEntry= Entry(root, width=4, font=("Arial",19,""),textvariable=minute)
minuteEntry.place(x=130,y=20)

secondEntry= Entry(root, width=4, font=("Arial",19,""),textvariable=second)
secondEntry.place(x=180,y=20)


def submit():
	try:
		temp = int(hour.get())*3600 + int(minute.get())*60 + int(second.get())
	except:
		print("Please input the right value")
	while temp >-1:

		mins,secs = divmod(temp,60)
		hours=0
		if mins >60:
			hours, mins = divmod(mins, 60)
		
		hour.set("{0:2d}".format(hours))
		minute.set("{0:2d}".format(mins))
		second.set("{0:2d}".format(secs))


		root.update()
		time.sleep(1)
		if (temp == 0):
			messagebox.showinfo("Time Countdown", "Time's up ")
		temp -= 1


btn = Button(root, text='Set Time Countdown', bd='5',
			command= submit)
btn.place(x = 70,y = 120)

# infinite loop
root.mainloop()

Output:

Python Script to Create Countdown Timer in Tkinter

Python Script to Create Countdown Timer in Tkinter

Code to Create Countdown Timer in Tkinter

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