CWD.

    The function temporarily changes the current working directory
    after creating a temporary directory in the current directory with
    name *name*.  If *name* is None, the temporary directory is
    created using tempfile.mkdtemp.

    If *quiet* is False (default) and it is not possible to
    create or change the CWD, an error is raised.  If *quiet* is True,
    only a warning is raised and the original CWD is used.

    )