猫史档案馆

import tkinter as tk
import random
import threading
import time
def dow():
window = tk.Tk()
width = window.winfo_screenwidth()
height = window.winfo_screenheight()
a = random.randrange(0,width)
b = random.randrange(0,height)
window.title('元旦节')
window.geometry("200x50"+"+"+str(a)+"+"+str(b))
tk.Label(window,
text='元旦节快乐！',
bg='Red',
font=('楷体', 17),
width=15, height=2
).pack()
window.mainloop()

threads = []
for i in range(50):
t = threading.Thread(target=dow)
threads.append(t)
time.sleep(0.1)

threads[i].start()

运行图片：