How to remember tkinter window position in python 3?

The only way to remember settings from session to session is to write them into a file. So, get the root window geometry (it's a string) and write it into a file. If you want the function to be executed automatically as a hook, bind it to the "<Configure>" event:

def save_size(event):  with open("myapp.conf", "w") as conf:    conf.write(root.geometry()) # Assuming root is the root windowroot.bind("<Configure>",save_size)

You can later read the geometry from the file and restore it.

#Here I save the x and y position of the window to a file "myapp.conf"#Here I see if the file exists.if os.path.isfile("myapp.conf"):     #Here I read the X and Y positon of the window from when I last closed it.    with open("myapp.conf", "r") as conf:         root.geometry(conf.read())else:    #Default window position.    root.geometry('610x270+0+0')def on_close():     #custom close options, here's one example:     #close = messagebox.askokcancel("Close", "Would you like to close the program?")     #if close:        #Here I write the X Y position of the window to a file "myapp.conf"        with open("myapp.conf", "w") as conf:             conf.write(root.geometry())        root.destroy()          root.protocol("WM_DELETE_WINDOW",  on_close)

It took me pretty much time to get my head around actual implementation of this. So I wanted to share my final code. Based on DyZ suggestion.

I didn't use <Configure> event as suggested because only saving before quit is enough for me.

class Window(tk.Tk):    def __init__(self, *args, **kwargs):        tk.Tk.__init__(self, *args, **kwargs)        # ...        # bla bla bla        # My GUI codes came here        # ...        # Try to load last saved window data        self.statusbar['text']="reading ini file..."        ini_file_path = "mapedit.ini"        try:            # if the file is there            # get geometry from file             ini_file = open(ini_file_path,'r')            self.geometry(ini_file.read())            self.statusbar['text']= "ini file read"            ini_file.close()        except:            # if the file is not there, create the file and use default            # then use default geometry.            self.statusbar['text']="ini file not found. New file created."            ini_file = open(ini_file_path, 'w')            ini_file.close()            self.geometry("640x400+100+200")    def client_exit(self):        self.save_geo()        self.destroy()    def save_geo(self):        # save current geometry to the ini file         try:            with open("mapedit.ini", 'w') as ini_file:                ini_file.write(self.geometry())                self.statusbar['text']="geo sv"                ini_file.close()        except:            statusbar['text']="ini file not found"'''   This is where I created GUI instance'''if __name__ == "__main__":    win = Window()    # attach deletion handler to 'client_exit' method    win.protocol("WM_DELETE_WINDOW", win.client_exit)    win.mainloop()