playback test

play.py

    def play_objects(self):
        # 2. Act on every cloth based on cloth_set objectSet and uncheck Active checkbox from over to under
        print "in play_objects method"
        obj_list = cmds.sets('cloth_set', q=True)
        for each in obj_list:
            # deactive Active checkbox in its properties
            shape = cmds.listRelatives(each)
            self.isolate_toggling_objects(shape)
            print each
            cmds.setAttr(str(shape[0]) + '.active', 1)

            # 3. play the scene
            cmds.play(forward=True)
            # mel.eval('playButtonForward;')
            print "here"