How To Update Root Tkinker Python

How exercise I create an automatically updating GUI using Tkinter in Python?

GUI window has many controls such as labels, buttons, text boxes, etc. We may sometimes want the content of our controls such every bit labels to update automatically while we are viewing the window.

We can employ after() to run a function after a certain time. For example, 1000 milliseconds mean ane 2d. The office which we phone call continuously after a certain corporeality of time will update the text or any updation you lot want to happen.

We have a label on our window. We want the text of the characterization to update automatically after 1 second. To proceed the example easy, suppose we want the label to testify some number between 0 and 1000. We want this number to alter subsequently each 1 second.

We can practice this by defining a part that will change the text of the label to some random number between 0 and chiliad. We tin call this part continuously after an interval of 1 second using the after().

Case

from Tkinter import * from random import randint root = Tk() lab = Label(root) lab.pack()  def update():    lab['text'] = randint(0,1000)    root.after(1000, update) # run itself again later thousand ms  # run commencement time update()  root.mainloop()

This volition automatically modify the text of the characterization to some new number after grand milliseconds. You can change the time interval according to need. The update function can be modified to perform the required updation.

root.after(k,update)

This line of the code performs the chief function of recalling the function update().

The first parameter in root.after() specifies the fourth dimension interval in milliseconds subsequently which y'all want the part to exist recalled.

The second parameter specifies the name of the function to be recalled.

Published on 11-Mar-2021 09:42:54

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