.after(delay, FuncName=FuncName)

import random
from tkinter import *

base = Tk()

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

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

words = ['周一', '周二', '周三', '周四', '周五','周六','周日']
#以随机顺序一个接一个地显示单词。
def display_weekday():
   if not words:
   return
   rand = random.choice(words)
   character_frame = Label(contrive, text=rand)
   character_frame.pack()
   contrive.after(500,display_weekday)
   words.remove(rand)

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

from tkinter import Tk, mainloop, TOP
from tkinter.ttk import Button

from time import time

base = Tk()

stud = Button(base, text = 'After Demo()')
stud.pack(side = TOP, pady = 8)

print('处理开始……')

begin = time()

base.after(3000, base.destroy)

mainloop()

conclusion = time()
print('处理在 % d 秒内被破坏' % ( conclusion-begin))

处理开始…
处理在 3 秒内被破坏