from tkinter import *
import time
root=Tk()
root.configure(bg='navajo white')
label1=Label(root,font='comicsans 50',bg='navajo white')
label1.pack()
def get_time():
current_time=time.strftime("%H:%M:%S %p")
label1.configure(text=current_time)
label1.after(200,get_time)
get_time()
root.mainloop()