def close(self):
		'''关闭与数据库的连接'''
		if VERBOSE:
			print 'Database connection CLOSE.'
		self.conn.close()
def _init_liststore(self):
        """Creates the liststore"""
        self.liststore = Gtk.ListStore(object, GdkPixbuf.Pixbuf, str, str)
        self.set_model(self.liststore)