Python | after method in Tkinter (original) (raw)
Last Updated : 16 Jun, 2021
Tkinter provides a variety of built-in functions develop interactive and featured GUI (Graphical User Interface). after() function is also a Universal function which can be used directly on the root as well as with other widgets.
after(parent, ms, function = None, *args)
Parameters:
parent: is the object of the widget or main window whichever is using this function.
ms: is the time in milliseconds.
function: which shall be called.
*args: other options.
Code #1:
Python3
from tkinter import Tk, mainloop, TOP
from tkinter.ttk import Button
from time import time
root = Tk()
button = Button(root, text = 'Geeks' )
button.pack(side = TOP, pady = 5 )
print ( 'Running...' )
start = time()
root.after( 5000 , root.destroy)
mainloop()
end = time()
print ( 'Destroyed after % d seconds' % (end - start))
Output:
https://media.geeksforgeeks.org/wp-content/uploads/20190408013114/after_video.mp4
When you run the program it will show a Tkinter window having a Button but after 5 seconds the window gets destroyed.
Code #2: Prompting a message after certain time (in our program after 5 seconds).
Python3
from tkinter import Tk, mainloop, TOP
from tkinter.ttk import Button
from tkinter.messagebox import _show
root = Tk()
root.geometry( '200x100 + 300 + 250' )
button = Button(root, text = 'Geeks' )
button.pack(side = TOP, pady = 5 )
root.after( 5000 , lambda : _show( 'Title' , 'Prompting after 5 seconds' ))
root.after( 6700 , root.destroy)
mainloop()
Output:
In below output a messagebox will prompt after 5 seconds you can even call any function after a certain period of time by passing the function name.
https://media.geeksforgeeks.org/wp-content/uploads/20190408014106/prompting_message.mp4