[Tkinter] Return a value to __main__

[Coricoco_fr]

Hello,
I'm not sure I understood your request. Do you want to do this? :

import tkinter as tk


class Window(tk.Tk):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.count = tk.IntVar()
        self.count.set(0)
        self.label = tk.Label(self, text='Hello World')
        self.label.pack()
 
 
    def counter(self):
        self.count.set(self.count.get()+1)
        self.label['text'] = self.count.get()
        self.after(1000, self.counter)

if __name__ == '__main__':
    
    app = Window()
    def trace(*event):
        print("app.couter in main", app.count.get())
    
    app.count.trace_add("write", trace)
    app.after(1000, app.counter)
    app.mainloop()