137 def iter_importer_modules(importer, prefix=''):  argument
138     if not hasattr(importer, 'iter_modules'):
140     return importer.iter_modules(prefix)
144 def _iter_file_finder_modules(importer, prefix=''):  argument
145     if importer.path is None or not os.path.isdir(importer.path):
151         filenames = os.listdir(importer.path)
162         path = os.path.join(importer.path, fn)
373     def iter_zipimport_modules(importer, prefix=''):  argument
374         dirlist = sorted(zipimport._zip_directory_cache[importer.archive])
375         _prefix = importer.prefix
417         importer = sys.path_importer_cache[path_item]
421                 importer = path_hook(path_item)
422                 sys.path_importer_cache.setdefault(path_item, importer)
427             importer = None
428     return importer