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poker.py
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poker.py
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def poker(hands):
"""
([hand, hand, ...])-> hand(s)
Return the best hand(s) from list of hands
>>> sf = ['JC', 'TC', '9C', '8C', '7C']
>>> fk = ['5S', '5H', '5D', '5C', 'KS']
>>> sf2 = ['JS', 'TS', '9S', '8S', '7S']
>>> poker([sf, sf2])
[['JC', 'TC', '9C', '8C', '7C'], ['JS', 'TS', '9S', '8S', '7S']]
>>> poker([sf, fk])
[['JC', 'TC', '9C', '8C', '7C']]
>>> fh = ['5S', '5H', '5D', '8C', '8S']
>>> poker([fh, fk])
[['5S', '5H', '5D', '5C', 'KS']]
>>> s1 = ['JC', 'TC', '9C', '8S', '7C']
>>> poker([fh, s1])
[['5S', '5H', '5D', '8C', '8S']]
>>> op = ['5S', '3H', '9D', '8C', '8S']
>>> tp = ['5S', '5H', '9D', '8C', '8S']
>>> hc = ['4S', '3H', '9D', '8C', 'TS']
>>> poker([op, tp])
[['5S', '5H', '9D', '8C', '8S']]
>>> poker([op, hc])
[['5S', '3H', '9D', '8C', '8S']]
>>> poker([op, hc, sf])
[['JC', 'TC', '9C', '8C', '7C']]
>>> poker([op])
[['5S', '3H', '9D', '8C', '8S']]
>>> s2 = ['7D', '9D', '8H', '6S', '5D']
>>> poker([s1, s2])
[['JC', 'TC', '9C', '8S', '7C'], ['7D', '9D', '8H', 'TS', 'JD']]
"""
win = max(hands, key=hand_rank)
maxvalue = hand_rank(win)
return [hand for hand in hands if hand_rank(hand)==maxvalue]
def ranking(hand):
'''
(hand)-> [int,int,int,int,int]
Return rank of the cards in hand
>>> sf = ['JC', 'TC', '9C', '8C', '7C']
>>> ranking(sf)
[11, 10, 9, 8, 7]
>>> tp = ['5S', '5H', '9D', '8C', '8S']
>>> ranking(tp)
[9, 8, 8, 5, 5]
>>> sal = ['5S', '4H', '3C', '2C', 'AC']
>>> ranking(sal)
[5, 4, 3, 2, 1]
'''
ranks = ['--23456789TJQKA'.index(r) for r,s in hand]
ranks.sort(reverse=True)
if ranks == [14,5,4,3,2]:
ranks = [5,4,3,2,1]
return ranks
def hand_rank(hand):
"""
(hand)-> int
Return the hand rank of a hand
>>> sf = ['JC', 'TC', '9C', '8C', '7C']
>>> hand_rank(sf)
(8, 11)
>>> fk = ['5S', '5H', '5D', '5C', 'KS']
>>> hand_rank(fk)
(7, 5)
>>> fh = ['5S', '5H', '5D', '8C', '8S']
>>> hand_rank(fh)
(6, 5)
>>> f1 = ['JC', '5C', '9C', '8C', '7C']
>>> hand_rank(f1)
(5, [11, 9, 8, 7, 5])
>>> s1 = ['JC', 'TC', '9C', '8S', '7C']
>>> hand_rank(s1)
(4, 11)
>>> tk = ['5S', '7H', '8D', '8C', '8S']
>>> hand_rank(tk)
(3, 8)
>>> tp = ['5S', '5H', '9D', '8C', '8S']
>>> hand_rank(tp)
(2, 8, 5, 9)
>>> op = ['5S', '3H', '9D', '8C', '8S']
>>> hand_rank(op)
(1, 8, [9, 8, 8, 5, 3])
>>> hc = ['4S', '3H', '9D', '8C', 'TS']
>>> hand_rank(hc)
(0, [10, 9, 8, 4, 3])
"""
ranks = ranking(hand)
if straight(hand, ranks):
if flush(hand):
return (8, max(ranks))
else:
return (4, max(ranks))
elif kind(4, ranks):
return (7, kind(4, ranks), kind(1, ranks))
elif fullhouse(ranks):
return (6, kind(3, ranks), kind(2, ranks))
elif flush(hand):
return (5, ranks)
elif kind(3, ranks):
return (3, kind(3, ranks), ranks)
elif twopair(ranks):
return (2, twopair(ranks), kind(1, ranks))
elif kind(2, ranks):
return (1, kind(2, ranks), ranks)
else:
return (0, ranks)
def straight(hand, ranks):
"""
(hand)-> Bool
Return True if hand is straight,
false otherwise
>>> sf = ['JC', 'TC', '9C', '8C', '7C']
>>> straight(sf)
True
>>> fk = ['5S', '5H', '5D', '5C', 'KS']
>>> straight(fk)
False
"""
return max(ranks)-min(ranks) == 4 and len(set(ranks)) == 5
def flush(hand):
"""
(hand)-> Bool
Return True if hand is flush, False otherwise.
>>> sf = ['JC', 'TC', '9C', '8C', '7C']
>>> flush(sf)
True
>>> fk = ['5S', '5H', '5D', '5C', 'KS']
>>> flush(fk)
False
"""
suits = [s for r,s in hand]
return len(set(suits)) == 1
def fullhouse(ranks):
"""
(ranks)-> Bool
Return True if hand is fullhouse,
false otherwise
>>> sf_ranks = [11, 10, 9, 8, 7]
>>> fullhouse(sf_ranks)
False
>>> fk_ranks = [5, 5, 5, 5, 13]
>>> fullhouse(fk_ranks)
False
>>> fh_ranks = [5, 5, 5, 8, 8]
>>> fullhouse(fh_ranks)
True
"""
return True if kind(3, ranks) and kind(2, ranks) else False
def kind(n, ranks):
"""
(ranks)-> int
Return rank if hand is n kind,
false otherwise
>>> sf_ranks = [11, 10, 9, 8, 7]
>>> kind(4, sf_ranks)
0
>>> fk_ranks = [5, 5, 5, 5, 13]
>>> kind(4, fk_ranks)
5
>>> fh_ranks = [5, 5, 5, 8, 8]
>>> kind(3, fh_ranks)
5
>>> op_ranks = [5, 3, 9, 8, 8]
>>> kind(2, op_ranks)
8
"""
for r in ranks:
if ranks.count(r) == n:
return r
return 0
def twopair(ranks):
"""
(ranks)-> tuple
Return tuple of highpair and lowpair if hand is twopair,
false otherwise
>>> sf_ranks = [11, 10, 9, 8, 7]
>>> twopair(sf_ranks)
()
>>> tp_ranks = [5, 5, 9, 8, 8]
>>> twopair(tp_ranks)
(8, 5)
"""
high_pair = kind(2, ranks)
low_pair = kind(2, list(reversed(ranks)))
return (high_pair, low_pair) if high_pair > low_pair else (low_pair, high_pair) if high_pair < low_pair else ()