How to use the snakeviz.main.VizHandler function in snakeviz

continue
            fullname = os.path.join(path, name)
            displayname = linkname = name
            # Append / for directories or @ for symbolic links
            if os.path.isdir(fullname):
                displayname += '/'
            if os.path.islink(fullname):
                displayname += '@'
            dir_entries.append(
                [[displayname, quote(os.path.join(path, linkname), safe='')]])

        self.render(
            'dir.html', dir_name=path, dir_entries=json.dumps(dir_entries))


handlers = [(r'/snakeviz/(.*)', VizHandler)]

app = tornado.web.Application(handlers, **settings)

if __name__ == '__main__':
    app.listen(8080)
    tornado.ioloop.IOLoop.instance().start()