These modules are used to implement the os.path module,
and are not documented beyond this mention. There's little need to
document these.
ntpath
-- Implementation of os.path on Win32, Win64, WinCE, and
OS/2 platforms.
posixpath
-- Implementation of os.path on POSIX.
bsddb185
-- Backwards compatibility module for systems which still use the Berkeley
DB 1.85 module. It is normally only available on certain BSD Unix-based
systems. It should never be used directly.