*unc* will always be the empty string. Availability: Windows.
-<<<<<<< .working
-=======
-.. function:: walk(path, visit, arg)
-
- Calls the function *visit* with arguments ``(arg, dirname, names)`` for each
- directory in the directory tree rooted at *path* (including *path* itself, if it
- is a directory). The argument *dirname* specifies the visited directory, the
- argument *names* lists the files in the directory (gotten from
- ``os.listdir(dirname)``). The *visit* function may modify *names* to influence
- the set of directories visited below *dirname*, e.g. to avoid visiting certain
- parts of the tree. (The object referred to by *names* must be modified in
- place, using :keyword:`del` or slice assignment.)
-
- .. note::
-
- Symbolic links to directories are not treated as subdirectories, and that
- :func:`walk` therefore will not visit them. To visit linked directories you must
- identify them with ``os.path.islink(file)`` and ``os.path.isdir(file)``, and
- invoke :func:`walk` as necessary.
-
- .. note::
-
- This function is deprecated and has been removed in 3.0 in favor of
- :func:`os.walk`.
-
-
->>>>>>> .merge-right.r72009
.. data:: supports_unicode_filenames
True if arbitrary Unicode strings can be used as file names (within limitations