Object does not support indexing when using random choice()

    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()

      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]



    deck = FrenchDeck()

    choice(deck)

The error I am getting is:

    Traceback (most recent call last):
      File "cards.py", line 24, in <module>
        choice(deck)
      File "C:\Python36\lib\random.py", line 258, in choice
        return seq[i]
    TypeError: 'FrenchDeck' object does not support indexing

This is from Fluent Python, and I have typed it in as it is in the book. I am wondering if this is an issue that relates to newer Python distributions.