def read_card(self):
print 'card name?'
while True:
card = raw_input()
if card in card_by_name:
return card
print 'available card names are', card_by_name.keys()
def warn_available_cards(self, card):
print 'available card names are ' + str(card_by_name.keys()) + ' (got: ' + card + ')'
