def serialized(self):
        to_ret = {}
        for group, requirements in self.items():
            to_ret[group] = [str(requirement) for requirement in requirements]
        return to_ret
def _on_event_box_enter_notify_event(self, event_box, event):
    if event.detail != gtk.gdk.NOTIFY_INFERIOR:
      self._hbox_buttons.show()