def export_course_to_xml(modulestore, contentstore, course_key, root_dir, course_dir):
 CourseExportManager(modulestore, contentstore, course_key, root_dir, course_dir).export()

def export_course_to_xml ( modulestore , contentstore , course_key , root_dir , course_dir ) : CourseExportManager ( modulestore , contentstore , course_key , root_dir , course_dir ) . export ( )
thin wrapper for the course export manager .