def index(self):
        """Produce HTTP response body of home page app index URI."""
        return """
            <p>Hi, this is the home page! Check out the other
            fun stuff on this site:</p>

            <ul>
                <li><a href="/joke/">A silly joke</a></li>
                <li><a href="/links/">Useful links</a></li>
            </ul>"""
Produce HTTP response body of home page app index URI.
cherrypy/tutorial/tut04_complex_site.py