here are no
    input items.

        >>> minmax([], default=(0, 0))
        (0, 0)

    Otherwise ``ValueError`` is raised.

    This function is based on the
    `recipe <http://code.activestate.com/recipes/577916/>`__ by
    Raymond Hettinger and takes care to minimize the number of comparisons
    performed.
    z[`minmax()` argument is an empty iterable. Provide a `default` value to suppress this error.Nr