def register(self, stage):
        #print stage
        if not hasattr(stage, 'used'):
            stage.used = False
        self.stages.append(stage)
        self.stageDict[stage.name] = stage
start the web server
dataset/ETHPy150Open renmengye/imageqa-public/src/nn/container.py/Container.register--crossover with--dataset/ETHPy150Open uwdata/termite-visualizations/web2py/gluon/main.py/HttpServer.start