# after.py3  used with tkinter
import random
from tkinter import *
import sys

base = Tk()  # create screen
base.title("after.py3  5 second delay")

a = Label(base, text="After() Demo")
a.pack()

contrive = Frame(base, width=450, height=500)
contrive.pack()

words = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri','Sat','Sun']
#Display words randomly one after the other.
def display_weekday():
  if not words:
    return       # leaves screen, or
    # sys.exit() # screen gone

  # end if
  rand = random.choice(words)
  character_frame = Label(contrive, text=rand)
  character_frame.pack()
  contrive.after(5000,display_weekday) # 5000 milliseconds = 5 seconds
  words.remove(rand)

# end display_weekday
base.after(0, display_weekday)
base.mainloop()