Ich bekomme immer solche Fehlermeldungen:
In den FAQ habe ich leider nichts dazu gefunden.GtkWarning: Attempting to add a widget with type GtkTreeView to a container of type GtkScrolledWindow, but the widget is already inside a container of type GtkScrolledWindow, the GTK+ FAQ at http://www.gtk.org/faq/ explains how to reparent a widget.
self.scrolled_window_right.add(self.listview)
GtkWarning: gtk_scrolled_window_add: assertion `bin->child == NULL' failed