def plural(items, word):
    """Return number of items followed by the right form  of ``word``.

    ``items`` can either be an int or an object whose cardinality can be
    discovered via `len(items)`.

    The plural of ``word`` is assumed to be made by adding an ``s``.

    """
    item_count = items if isinstance(items, int) else len(items)
    word = word if item_count == 1 else word + 's'
    return '{0} {1}'.format(item_count, word)