class Card:
  '''Card representation:
  suit:
    "S" == spades, "H" == hearts, "C" == clubs, "D" == diamonds,
    "J" == general joker, "JR" == red joker, "JB" == black joker
  number:
    1-13, or None for jokers
  '''
  
  def __init__(self, suit, number):
    self.suit = suit
    self.number = number

  def __repr__(self):
    return "Card(\"%s\", %d)" % (self.suit, self.number)

  def __hash__(self):
    return id(self)

  def __eq__(self, other):
    return isinstance(other, Card) and self.suit == other.suit and self.number == other.number