Method called when selected item is changed

def OnSelChanged(self, event):
        """Method called when selected item is changed"""
        # Get the selected item object
        item = event.GetItem()
        obj = self.leftPanel.model.ItemToObject(item)
        if isinstance(obj, compass.Survey):
            l = [
                'Survey Name: %s' % obj.name,
                'Survey Date: %s' % obj.date,
                'Comment: %s' % obj.comment,
                'Team: %s' % ', '.join(obj.team),
                'Surveyed Footage: %0.1f' % obj.length,
                '',
                ]
            l.extend(['  '.join(['%s: %s' % (k,v) for (k,v) in shot.items()]) for shot in obj.shots])
            self.display.SetLabel(str('\n'.join(l)))
        else:
            self.display.SetLabel('')