import collections
from random import choice

Card  = collections.namedtuple('Card',['rank', 'suit'])

class FrenchDeck:
    ranks =  [str(n) for n in range (2, 11)] + list ('JQKA')
    suits = 'spades diamonds clubs hearts'.split()
    suits_values = dict(spades=3, hearts=2, diamonds=1, clubs=0)

    def __init__(self):
        self._cards = [Card(rank, suit) for suit in self.suits
                                    for rank in self.ranks]


    def __len__(self):
        return len(self._cards)

    def __getitem__(self, position):
        return self._cards[position]

>>> beer_dark = Card('7', 'diamonds')
>>> beer_card
Card(rank='7', suit='diamonds')

>>> deck = FrenchDeck()
>>> len(deck)
52