開発環境
- macOS Sierra - Apple (OS)
- Emacs (Text Editor)
- Python 3.5 (プログラミング言語)
Think Python (Allen B. Downey (著)、 O'Reilly Media)のChapter 18.(Inheritance)のExercises 18-3-6.(No. 4220)を取り組んでみる。
Exercises 18-3-6.(No. 4220)
コード(Emacs)
#!/usr/bin/env python3 # -*- coding: utf-8 -*- from Card import Hand, Deck, Card class PokerHand(Hand): size = 5 def suit_hist(self): """Builds a histogram of the suits that appear in the hand. Stores the result in attribute suits. """ self.suits = {} for card in self.cards: self.suits[card.suit] = self.suits.get(card.suit, 0) + 1 def rank_hist(self): self.ranks = {} for card in self.cards: self.ranks[card.rank] = self.ranks.get(card.rank, 0) + 1 def has_flush(self): """Returns True if the hand has a flush, False otherwise. Note that this works correctly for hands with more than 5 cards. """ self.suit_hist() for val in self.suits.values(): if val >= 5: return True return False def has_pair(self): self.rank_hist() for val in self.ranks.values(): if val == 2: return True return False def has_twopair(self): self.rank_hist() count = 0 for val in self.ranks.values(): if val == 2: if count == 0: count = 1 else: return True return False def has_three_of_kind(self): self.rank_hist() for val in self.ranks.values(): if val == 3: return True return False def has_straight(self): self.rank_hist() ks = self.ranks.keys() start = 1 stop = 13 - (PokerHand.size - 1) + 1 for n in range(start, stop): for m in range(n, n + PokerHand.size): if m not in ks: break else: return True if 1 in ks: start = 13 - (PokerHand.size - 1) + 1 stop = start + PokerHand.size - 1 for n in range(start, stop): if n not in ks: return False return True return False def has_full_house(self): return self.has_pair() and self.has_three_of_kind() def has_four_of_kind(self): self.rank_hist() for val in self.ranks.values(): if val == 4: return True return False def has_straight_flush(self): return self.has_straight() and self.has_flush() labels = { 'straight flush': has_straight_flush, 'four of a kind': has_four_of_kind, 'full house': has_full_house, 'flush': has_flush, 'straight': has_straight, 'three of a kind': has_three_of_kind, 'two pair': has_twopair, 'pair': has_pair, } def classify(self): for k, v in PokerHand.labels.items(): if v(self): self.label = k def deal(hand_n, card_n): deck = Deck() deck.shuffle() hands = [] for _ in range(hand_n): hand = PokerHand() deck.move_cards(hand, card_n) hands.append(hand) classifications = [] for hand in hands: hand.classify() classifications.append(hand.label) return classifications if __name__ == '__main__': count = {} n = 10000 for _ in range(n): classifications = deal(5, 10) for label in classifications: count[label] = count.get(label, 0) + 1 s = sum(count.values()) for k, v in sorted(count.items(), key=lambda x: x[1]): if k == '': continue print('{0:15}: {1:10.5f}%'.format(k, v / s * 100))
入出力結果(Terminal, IPython)
$ ./PokerHand.py four of a kind : 0.73400% three of a kind: 3.83600% straight flush : 6.53600% flush : 13.36600% straight : 17.14400% full house : 17.57400% pair : 40.56000% $
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