def html_report(self, morfs=None, directory=None, ignore_errors=None,<EOL>omit=None, include=None, extra_css=None, title=None):
self._harvest_data()<EOL>self.config.from_args(<EOL>ignore_errors=ignore_errors, omit=omit, include=include,<EOL>html_dir=directory, extra_css=extra_css, html_title=title,<EOL>)<EOL>reporter = HtmlReporter(self, self.config)<EOL>return reporter.report(morfs)<EOL>
Generate an HTML report.

        The HTML is written to `directory`.  The file "index.html" is the
        overview starting point, with links to more detailed pages for
        individual modules.

        `extra_css` is a path to a file of other CSS to apply on the page.
        It will be copied into the HTML directory.

        `title` is a text string (not HTML) to use as the title of the HTML
        report.

        See `coverage.report()` for other arguments.

        Returns a float, the total percentage covered.