[python] tkinter: how to use after method

Hey I am new to python and am using tkinter for my gui. I am having trouble using the "after" method. The goal is to make a random letter appear every 5 seconds.

Here is my code:

import random
import time
from tkinter import *


root = Tk()

w = Label(root, text="GAME")
w.pack()

frame = Frame(root, width=300, height=300)
frame.pack()

L1 = Label(root, text="User Name")
L1.pack(side=LEFT)
E1 = Entry(root, bd =5)
E1.pack(side=LEFT)


tiles_letter = ['a', 'b', 'c', 'd', 'e']


while len(tiles_letter) > 0:
    rand = random.choice(tiles_letter)
    tile_frame = Label(frame, text=rand)
    tile_frame.pack()
    frame.after(500)
    tiles_letter.remove(rand)  # remove that tile from list of tiles

root.mainloop()

can someone please help me --- the problem is definitely frame.after(500): i'm not sure if it is correct to use "frame" and I don't know what which argument follows the 500.

Thanks

This question is related to python user-interface tkinter pycharm

The answer is


I believe, the 500ms run in the background, while the rest of the code continues to execute and empties the list.

Then after 500ms nothing happens, as no function-call is implemented in the after-callup (same as frame.after(500, function=None))


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