#!/usr/bin/env python from gi.repository import Gtk import PreferencesWindow class Tentia: def __init__(self): self.setup_preferences_window() self.preferences_window.show_all() Gtk.main() def quit(self): Gtk.main_quit def setup_preferences_window(self): self.preferences_window = PreferencesWindow(self) if __name__ == "__main__": Tentia()