(hand)
return sum(hand) / len(hand)
:param hand: list - cards in hand.
    :return:  float - average value of the cards in the hand.
def card_average(hand):
    """

    :param hand: list - cards in hand.
    :return:  float - average value of the cards in the hand.
    """

    return sum(hand) / len(hand)
def card_average ( hand ) : return sum ( hand ) / len ( hand )