black-jack/main.py

class CardValueException(Exception):
	"""
	Create a new exception class
	"""
	def __init__(self, value):
		"""
		Constructor : creates a new card value exception
		@param string Value to display
		"""
		self.value = str(value)

	def __str__(self):
		"""
		Display the error message
		"""
		return repr(self.value)

class HandException(Exception):
	"""
	Create a new exception class
	"""
	def __init__(self, value):
		"""
		Constructor : creates a new hand exception
		@param string Value to display
		"""
		self.value = str(value)

	def __str__(self):
		"""
		Display the error message
		"""
		return repr(self.value)

class Card(object):
	"""
	Definition of a card object
	"""

	### static properties

	# card type
	headType    = "Head"
	asType      = "As"
	defaultType = "default"

	# associaative table
	assocStringType = {
		"As"   : [ "A" ],
		"Head" : [ "K", "Q", "J" ],
		"default" : [ str(i) for i in reversed(range(10)) ]
	}

	#available values
	availableStringValues = ["A", "K", "Q", "J"] + assocStringType[defaultType]


	def __init__(self, valueString):
		"""
		Constructor : creates a new card following its string value
		@param string valueString
		@raise CardValueException if unexecpected string value is given
		"""
		self.__valueString = valueString
		self.__type        = self.__defineCardType()
		self.__value       = self.__defineCardValue()

	def __defineCardType(self):
		"""
		Using an associative table define if the card is either an head, an as or a normal card
		"""
		if not self.__valueString in Card.availableStringValues:
			raise CardValueException("This value doesn't exist, please check your code")

		for cardType in Card.assocStringType.keys():
			if self.__valueString in Card.assocStringType[cardType]:
				return cardType

	def __defineCardValue(self):
		"""
		Following is string value define is numeric value
		A card could have more than one value, ie : As => 1 or 11
		In this case the value will be a list, ie As [1, 11]
		Otherwise an integer
		"""
		if self.__type == Card.asType:
			return [1, 11]

		if self.__type == Card.headType:
			return 10

		return int(self.__valueString)

	def getType(self):
		"""
		Returns the card type
		"""
		return self.__type

	def getValue(self):
		"""
		Returns the card type
		"""
		return self.__value

	def getValueString(self):
		"""
		Returns the card type
		"""
		return self.__valueString


class Hand(object):
	"""
	Definition of a hand object
	"""

	def __init__(self):
		"""
		Constructror : creates a new empty hand
		"""
		self.__cards = []

	def addCard(self, card):
		"""
		Appends a card to hand
		@param Card A Card instance
		"""
		if type(card) != Card:
			raise HandException("You try to append an unexecpected object, the object a Card instance")
		
		self.__cards.append(card)

	def addCards(self, *args):
		"""
		Append a bunch of cards to hand
		"""
		for card in args:
			self.addCard(card)

	def addUp(self):
		"""
		Returns the sum of all card value
		if there are some as cards in the hand
		returns a list of total
		"""
		#retrieve as cards contents by the hand
		indexAsCards = [ self.__cards.index(card) for card in self.__cards if card.getType() == Card.asType ]
		
		if len(indexAsCards):
			indexAsCards = indexAsCards[0]
			for asValue in self.__cards[indexAsCards].getValue():
				yield  asValue + sum( [card.getValue() for index,card in enumerate(self.__cards) if index != indexAsCards ] )
			return

		yield sum( [card.getValue() for card in self.__cards ])

	def detectCouples(self):
		"""
		Retrieve the list of coupled cards
		"""
		cards = [ card.getValueString() for card in self.__cards ]
		return dict((x,cards.count(x)) for x in set(cards))



hand = Hand()
hand.addCards(Card('3'), Card('2'), Card('4'), Card('3'))
for val in hand.addUp():
	print val
print hand.detectCouples()