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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_on_demand_syllabus(self, class_name):
 """ Get the on-demand course listing webpage. """


        url = OPENCOURSE_ONDEMAND_COURSE_MATERIALS_V2.format(
            class_name=class_name)
        page = get_page(self._session, url)
        logging.debug('Downloaded %s (%d bytes)', url, len(page))

        return page