Tkinter error for a scheduled event

[wuf]

Hi Ceegen

Here is a working solution:

import time
import tkinter as tk

APP_TITLE = "The Time"

APP_XPOS = 100
APP_YPOS = 100
APP_WIDTH = 200
APP_HEIGHT = 100


class Application(object):

    def __init__(self, main_win):
        self.main_win = main_win
        
        self.time_var = tk.StringVar()
        self.build()
        
    def build(self):
        tk.Label(self.main_win, textvariable=self.time_var, width=10, fg='blue',
            font=('Helvetica', 30, 'bold')).pack(expand=True)
            
        self.update_time()
        
    def update_time(self):
        self.time_var.set(time.strftime('%H:%M:%S'))
        self.main_win.after(1000, self.update_time)
               
def main():
    main_win = tk.Tk()
    main_win.title(APP_TITLE)
    #main_win.geometry("+{}+{}".format(APP_XPOS, APP_YPOS))
    main_win.geometry("{}x{}".format(APP_WIDTH, APP_HEIGHT))
    
    app = Application(main_win)
    
    main_win.mainloop()

wuf