human
Complete the below
def _render_filenames(path, dest, saltenv, template, **kw):

    ''''Process markup in the :param:`path` and :param:`dest` variables (NOT the
    files under the paths they ultimately point to) according to the markup
    format provided by :param:`template`.'
    '''
 ... What is a the Python code you requested?
assistant
#Here is the Python code you requested.
    if (not template):
        return (path, dest)
    if (template not in salt.utils.templates.TEMPLATE_REGISTRY):
        raise CommandExecutionError('Attempted    to    render    file    paths    with    unavailable    engine    {0}'.format(template))
    kwargs = {}
    kwargs['salt'] = __salt__
    if (('pillarenv' in kw) or ('pillar' in kw)):
        pillarenv = kw.get('pillarenv', __opts__.get('pillarenv'))
        kwargs['pillar'] = _gather_pillar(pillarenv, kw.get('pillar'))
    else:
        kwargs['pillar'] = __pillar__
    kwargs['grains'] = __grains__
    kwargs['opts'] = __opts__
    kwargs['saltenv'] = saltenv
    def _render(contents):
        '\n                                Render    :param:`contents`    into    a    literal    pathname    by    writing    it    to    a\n                                temp    file,    rendering    that    file,    and    returning    the    result.\n                                '
        tmp_path_fn = salt.utils.files.mkstemp()
        with salt.utils.files.fopen(tmp_path_fn, 'w+') as fp_:
            fp_.write(contents)
        data = salt.utils.templates.TEMPLATE_REGISTRY[template](tmp_path_fn, to_str=True, **kwargs)
        salt.utils.files.safe_rm(tmp_path_fn)
        if (not data['result']):
            raise CommandExecutionError('Failed    to    render    file    path    with    error:    {0}'.format(data['data']))
        else:
            return data['data']
    path = _render(path)
    dest = _render(dest)
    return (path, dest)