"""
 blackjack_pair.py

 An example of :
   * two classes, Card and PairOfCards
   * the python dictionary
   * the __str__ and __cmp__ special methods

 Things that could be better :
   * add docstring tests
   * add Hand class that can include more than two cards
   * add Deck class that cards are pulled from to avoid duplicates

 Jim Mahoney | Nov 2012
"""

import random

class Card:
    """
    This class creates the cards, their ranks, and their suits.
    """

    ranks = ["Ace", "Two", "Three", "Four", "Five",
	     "Six", "Seven", "Eight", "Nine", "Ten",
	     "Jack", "Queen", "King"]			

    suits = {'s':"Spades", 'c':"Clubs", 'd':"Diamonds", 'h':"Hearts"}

    def __init__(self, rank=False, suit=False):
	if not suit:
	    suit = random.choice(['s', 'd', 'h', 'c'])
        if not rank:
	    rank = random.randint(1, 13)
	self.rank = rank
	self.suit = suit

    def __str__(self) :
	return self.getRank() + " of " + self.getSuit()	

    def getRank(self):
	""" return i.e. "Two" if rank is 2 """
	return Card.ranks[self.rank - 1]

    def getSuit(self):
	""" return i.e. "Diamonds" if suit is 'd' """
	return Card.suits[self.suit]

    def blackjackValue(self):
	if self.rank > 10:
	    bjvalue = 10
	else:
	    bjvalue = self.rank
	return bjvalue


class PairOfCards:
    """ two cards, including comparing their blackjack sum """

    def __init__(self):
        self.cards = [Card(), Card()]

    def __str__(self):
	return str(self.cards[0]) + ' and ' + str(self.cards[1])

    def pair_value(self):
	return self.cards[0].blackjackValue() + self.cards[1].blackjackValue()

    def __cmp__(self, other):
	return cmp(self.pair_value(), other.pair_value())

def main():
    (c1, c2) = (Card(), Card())
    print "The first card is " + str(c1)
    print "The second card is " + str(c2)
    print "The blackjacksum is " + \
	str(c1.blackjackValue() + c2.blackjackValue())

    my_pair = PairOfCards()
    your_pair = PairOfCard()
    if my_pair > your_pair:
	print "your blackjack sum is higher"

main()