def index(self):
        """Produce HTTP response body of joke page app index URI."""
        return """
            <p>"In Python, how do you create a string of random
            characters?" -- "Read a Perl file!"</p>
            <p>[<a href="../">Return</a>]</p>"""
Produce HTTP response body of joke page app index URI.
cherrypy/tutorial/tut04_complex_site.py