fpdb/pyfpdb/Stove.py

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#!/usr/bin/python
# -*- coding: iso-8859-15
#
# stove.py
# Simple Hold'em equity calculator
# Copyright (C) 2007-2008 Mika Bostr<74>m <bostik@iki.fi>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 3 of the License.
#
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# TODO gettextify usage print
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import L10n
_ = L10n.get_translation()
import sys, random
import re
import pokereval
SUITS = ['h', 'd', 's', 'c']
CONNECTORS = ['32', '43', '54', '65', '76', '87', '98', 'T9', 'JT', 'QJ', 'KQ', 'AK']
ANY = 0
SUITED = 1
OFFSUIT = 2
ev = pokereval.PokerEval()
class Stove:
def __init__(self):
self.hand = None
self.board = None
self.h_range = None
def set_board_with_list(self, board):
pass
def set_board_string(self, string):
board = Board()
# Board
b = string.strip().split()
if len(b) > 4:
board.b5 = b[4]
if len(b) > 3:
board.b4 = b[3]
if len(b) > 2:
board.b1 = b[0]
board.b2 = b[1]
board.b3 = b[2]
self.board = board
def set_hero_cards_string(self, string):
# Our pocket cards
cc = string.strip().split()
c1 = cc[0]
c2 = cc[1]
pocket_cards = Cards(c1, c2)
self.hand = pocket_cards
def set_villain_range_string(self, string):
# Villain's range
h_range = Range()
hands_in_range = string.strip().split(',')
for h in hands_in_range:
_h = h.strip()
h_range.expand(expand_hands(_h, self.hand, self.board))
self.h_range = h_range
class Cards:
def __init__(self, c1, c2):
self.c1 = c1
self.c2 = c2
def get(self):
return [self.c1, self.c2]
class Board:
def __init__(self, b1=None, b2=None, b3=None, b4=None, b5=None):
self.b1 = b1
self.b2 = b2
self.b3 = b3
self.b4 = b4
self.b5 = b5
def get(self):
b = []
if self.b3 is not None:
b.append(self.b1)
b.append(self.b2)
b.append(self.b3)
else:
b.extend(["__", "__", "__"])
if self.b4 is not None:
b.append(self.b4)
else:
b.append("__")
if self.b5 is not None:
b.append(self.b5)
else:
b.append("__")
return b
class Range:
def __init__(self):
self.__hands = set()
def add(self, hand):
self.__hands.add(hand)
def expand(self, hands):
self.__hands.update(set(hands))
def get(self):
return sorted(self.__hands)
class EV:
def __init__(self, plays, win, tie, lose):
self.n_hands = plays
self.n_wins = win
self.n_ties = tie
self.n_losses = lose
class SumEV:
def __init__(self):
self.n_hands = 0
self.n_wins = 0
self.n_ties = 0
self.n_losses = 0
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self.output = ""
def add(self, ev):
self.n_hands += ev.n_hands
self.n_wins += ev.n_wins
self.n_ties += ev.n_ties
self.n_losses += ev.n_losses
def show(self, hand, h_range):
win_pct = 100 * (float(self.n_wins) / float(self.n_hands))
lose_pct = 100 * (float(self.n_losses) / float(self.n_hands))
tie_pct = 100 * (float(self.n_ties) / float(self.n_hands))
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self.output = """
Enumerated %d possible plays.
Your hand: (%s %s)
Against the range: %s
Win Lose Tie
%5.2f%% %5.2f%% %5.2f%%
""" % (self.n_hands, hand.c1, hand.c2, cards_from_range(h_range), win_pct, lose_pct, tie_pct)
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print self.output
# Expands hand abbreviations such as JJ and AK to full hand ranges.
# Takes into account cards already known to be in player's hand and/or
# board.
def expand_hands(abbrev, hand, board):
selection = -1
known_cards = set()
known_cards.update(set([hand.c2, hand.c2]))
known_cards.update(set([board.b1, board.b2, board.b3, board.b4, board.b5]))
re.search('[2-9TJQKA]{2}(s|o)',abbrev)
if re.search('^[2-9TJQKA]{2}(s|o)$',abbrev): #AKs or AKo
return standard_expand(abbrev, hand, known_cards)
elif re.search('^[2-9TJQKA]{2}(s|o)\+$',abbrev): #76s+ or 76o+
return iterative_expand(abbrev, hand, known_cards)
#elif: AhXh
#elif: Ah6h+A
def iterative_expand(abbrev, hand, known_cards):
r1 = abbrev[0]
r2 = abbrev[1]
h_range = []
considered = set()
idx = CONNECTORS.index('%s%s' % (r1, r2))
ltr = abbrev[2]
h_range = []
for h in CONNECTORS[idx:]:
abr = "%s%s" % (h, ltr)
h_range += standard_expand(abr, hand, known_cards)
return h_range
def standard_expand(abbrev, hand, known_cards):
# Card ranks may be different
r1 = abbrev[0]
r2 = abbrev[1]
# There may be a specifier: 's' for 'suited'; 'o' for 'off-suit'
if len(abbrev) == 3:
ltr = abbrev[2]
if ltr == 'o':
selection = OFFSUIT
elif ltr == 's':
selection = SUITED
else:
selection = ANY
h_range = []
considered = set()
for s1 in SUITS:
c1 = r1 + s1
if c1 in known_cards:
continue
considered.add(c1)
for s2 in SUITS:
c2 = r2 + s2
if selection == SUITED and s1 != s2:
continue
elif selection == OFFSUIT and s1 == s2:
continue
if c2 not in considered and c2 not in known_cards:
h_range.append(Cards(c1, c2))
return h_range
def parse_args(args, container):
# args[0] is the path being executed; need 3 more args
if len(args) < 4:
return False
container.set_board_string(args[1])
container.set_hero_cards_string(args[2])
container.set_villain_range_string(args[3])
return True
def odds_for_hand(hand1, hand2, board, iterations):
res = ev.poker_eval(game='holdem',
pockets = [
hand1,
hand2
],
dead = [],
board = board,
iterations = iterations
)
plays = int(res['info'][0])
eval = res['eval'][0]
win = int(eval['winhi'])
lose = int(eval['losehi'])
tie = int(eval['tiehi'])
_ev = EV(plays, win, tie, lose)
return _ev
def odds_for_range(holder):
sev = SumEV()
monte_carlo = False
# Construct board list
b = []
board = holder.board
if board.b3 is not None:
b.extend([board.b1, board.b2, board.b3])
else:
b.extend(['__', '__', '__'])
monte_carlo = True
if board.b4 is not None:
b.append(board.b4)
else:
b.append("__")
if board.b5 is not None:
b.append(board.b5)
else:
b.append("__")
if monte_carlo:
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print _('No board given. Using Monte-Carlo simulation...')
iters = random.randint(25000, 125000)
else:
iters = -1
for h in holder.h_range.get():
e = odds_for_hand(
[holder.hand.c1, holder.hand.c2],
[h.c1, h.c2],
b,
iterations=iters
)
sev.add(e)
sev.show(holder.hand, holder.h_range.get())
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return sev
def usage(me):
print """Texas Hold'Em odds calculator
Calculates odds against a range of hands.
To use: %s '<board cards>' '<your hand>' '<opponent's range>' [...]
Separate cards with space.
Separate hands in range with commas.
""" % me
def cards_from_range(h_range):
s = '{'
for h in h_range:
if h.c1 == '__' and h.c2 == '__':
s += 'random, '
else:
s += '%s%s, ' % (h.c1, h.c2)
s = s.rstrip(', ')
s += '}'
return s
def main(argv=None):
stove = Stove()
if not parse_args(sys.argv, stove):
usage(sys.argv[0])
sys.exit(2)
odds_for_range(stove)
if __name__ == '__main__':
sys.exit(main())