import tornado.web
import tornado.autoreload

class Main(tornado.web.RequestHandler):
        def get(self):
                self.write("Main")

application = tornado.web.Application([
        (r"/", Main)
        ])

if __name__ == '__main__':
        def fn():
                print "Hooked before reloading..."
        application.listen(8000)
        tornado.autoreload.add_reload_hook(fn)
        tornado.autoreload.start()
        tornado.ioloop.IOLoop.instance().start()