282 def walk(top, topdown=True, onerror=None, followlinks=False):  argument
341     sys.audit("os.walk", top, topdown, onerror, followlinks)
342     return _walk(fspath(top), topdown, onerror, followlinks)
344 def _walk(top, topdown, onerror, followlinks):  argument
387             if not topdown and is_dir:
406     if topdown:
418                 yield from _walk(new_path, topdown, onerror, followlinks)
422             yield from _walk(new_path, topdown, onerror, followlinks)
430     def fwalk(top=".", topdown=True, onerror=None, *, follow_symlinks=False, dir_fd=None):  argument
463         sys.audit("os.fwalk", top, topdown, onerror, follow_symlinks, dir_fd)
475                                   topdown, onerror, follow_symlinks)
479     def _fwalk(topfd, toppath, isbytes, topdown, onerror, follow_symlinks):  argument
487         entries = None if topdown or follow_symlinks else []
507         if topdown:
513                     if topdown:
528                                       topdown, onerror, follow_symlinks)
532         if not topdown: