Graphical applications tend to execute everything in the main thread. This means that updates to its widgets happen in line with all other code that is currently executing.
As a result of this, any slow processing will often block the updating of the GUI. We can demonstrate this with a small example:
import tkinter as tkimport timewin = tk.Tk()win.geometry("200x150")counter = tk.IntVar()label = tk.Label(win, text="Ready to Work")counter_label = tk.Label(win, textvar=counter)
The example starts with a window which will contain a Label displaying the value of an IntVar.
We will be creating a button that increases the value stored in the IntVar, as well as another button which will simulate a very heavy ...