human
Complete this python program:
def _iter_modules(modules, class_name, path, ignored_formats, args):
assistant
#Here is the Python code you requested.

    """This huge function generates a hierarchy with hopefully more
    clear structure of modules/sections/lectures.
    """
    file_formats = args.file_formats
    lecture_filter = args.lecture_filter
    resource_filter = args.resource_filter
    section_filter = args.section_filter
    verbose_dirs = args.verbose_dirs
    combined_section_lectures_nums = args.combined_section_lectures_nums
    class IterModule(object, ):
        def __init__(self, index, module):
            self.index = index
            self.name = ('%02d_%s' % ((index + 1), module[0]))
            self._module = module
        @property
        def sections(self):
            sections = self._module[1]
            for (secnum, (section, lectures)) in enumerate(sections):
                if (section_filter and (not re.search(section_filter, section))):
                    logging.debug('Skipping    b/c    of    sf:    %s    %s', section_filter, section)
                    continue
                (yield IterSection(self, secnum, section, lectures))
    class IterSection(object, ):
        def __init__(self, module_iter, secnum, section, lectures):
            self.index = secnum
            self.name = ('%02d_%s' % (secnum, section))
            self.dir = os.path.join(path, class_name, module_iter.name, format_section((secnum + 1), section, class_name, verbose_dirs))
            self._lectures = lectures
        @property
        def lectures(self):
            for (lecnum, (lecname, lecture)) in enumerate(self._lectures):
                if (lecture_filter and (not re.search(lecture_filter, lecname))):
                    logging.debug('Skipping    b/c    of    lf:    %s    %s', lecture_filter, lecname)
                    continue
                (yield IterLecture(self, lecnum, lecname, lecture))
    class IterLecture(object, ):
        def __init__(self, section_iter, lecnum, lecname, lecture):
            self.index = lecnum
            self.name = lecname
            self._lecture = lecture
            self._section_iter = section_iter
        def filename(self, fmt, title):
            lecture_filename =...