gh-102519: Add doc updates for os.listdrives, listvolumes and listmounts (GH-102585)

Author: zooba

Doc/library/os.rst

@@ -2188,6 +2188,69 @@ features:
       Accepts a :term:`path-like object`.
 
 
+.. function:: listdrives()
+
+   Return a list containing the names of drives on a Windows system.
+
+   A drive name typically looks like ``'C:\\'``. Not every drive name
+   will be associated with a volume, and some may be inaccessible for
+   a variety of reasons, including permissions, network connectivity
+   or missing media. This function does not test for access.
+
+   May raise :exc:`OSError` if an error occurs collecting the drive
+   names.
+
+   .. audit-event:: os.listdrives "" os.listdrives
+
+   .. availability:: Windows
+
+   .. versionadded:: 3.12
+
+
+.. function:: listmounts(volume)
+
+   Return a list containing the mount points for a volume on a Windows
+   system.
+
+   *volume* must be represented as a GUID path, like those returned by
+   :func:`os.listvolumes`. Volumes may be mounted in multiple locations
+   or not at all. In the latter case, the list will be empty. Mount
+   points that are not associated with a volume will not be returned by
+   this function.
+
+   The mount points return by this function will be absolute paths, and
+   may be longer than the drive name.
+
+   Raises :exc:`OSError` if the volume is not recognized or if an error
+   occurs collecting the paths.
+
+   .. audit-event:: os.listmounts volume os.listmounts
+
+   .. availability:: Windows
+
+   .. versionadded:: 3.12
+
+
+.. function:: listvolumes()
+
+   Return a list containing the volumes in the system.
+
+   Volumes are typically represented as a GUID path that looks like
+   ``\\?\Volume{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}\``. Files can
+   usually be accessed through a GUID path, permissions allowing.
+   However, users are generally not familiar with them, and so the
+   recommended use of this function is to retrieve mount points
+   using :func:`os.listmounts`.
+
+   May raise :exc:`OSError` if an error occurs collecting the volumes.
+
+   .. audit-event:: os.listvolumes "" os.listvolumes
+
+   .. availability:: Windows
+
+   .. versionadded:: 3.12
+
+
 .. function:: lstat(path, *, dir_fd=None)
 
    Perform the equivalent of an :c:func:`lstat` system call on the given path.