Here's a quick listing of modules that are currently undocumented, but that should be documented. Feel free to contribute documentation for them! (Send via email to docs@python.org.)
The idea and original contents for this chapter were taken from a posting by Fredrik Lundh; the specific contents of this chapter have been substantially revised.
These modules are used to implement the :mod:`os.path` module, and are not documented beyond this mention. There's little need to document these.
- :mod:`ntpath`
- --- Implementation of :mod:`os.path` on Win32, Win64, and WinCE platforms.
- :mod:`posixpath`
- --- Implementation of :mod:`os.path` on POSIX.