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python - 列表上的动态嵌套循环

转载 作者:太空宇宙 更新时间:2023-11-04 05:28:45 25 4
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我有以下代码来计算许多游戏的所有可能赔率组合。我想做以下事情

  1. 删除所有丑陋的嵌套循环。
  2. 允许动态游戏,即我不必一直创建匹配列表并向嵌套循环添加条目。 (例如我想添加匹配项 k)

代码如下;

import numpy as np

"""
Odds Predictions.
----------------------------------------
"""

bet_amount = 1.00

# Set up odds of all teams in groups, touple contains odds for coming in first place and second place.
match_a = [("RUS-W", 2.37), ("RUS-X", 3.20), ("RUS-L", 3.50)]
match_b = [("ROM-W", 3.30), ("ROM-X", 3.10), ("ROM-L", 2.50)]
match_c = [("FRA-W", 1.25), ("FRA-X", 6.00), ("FRA-L", 11.00)]
match_d = [("ENG-W", 1.57), ("ENG-X", 4.00), ("END-L", 7.00)]
match_e= [("UKR-W", 1.57), ("UKR-X", 4.00), ("UKR-L", 7.00)]
match_f = [("GER-W", 1.57), ("GER-X", 4.33), ("GER-L", 6.50)]
match_g = [("ITA-W", 1.83), ("ITA-X", 3.50), ("ITA-L", 5.25)]
match_h = [("CZK-W", 4.75), ("CZK-X", 3.50), ("CZK-L", 1.90)]
match_i = [("SPA-W", 1.40), ("SPA-X", 4.75), ("SPA-L", 10.00)]
match_j = [("BEL-W", 1.72), ("BEL-X", 3.80), ("BEL-L", 5.50)]

totals = []
total_rank = []
count = 0

print 'Computing Combinations'

for mat_a in match_a:
for mat_b in match_b:
for mat_c in match_c:
for mat_d in match_d:
for mat_e in match_e:
for mat_f in match_f:
for mat_g in match_g:
for mat_h in match_h:
for mat_i in match_i:
for mat_j in match_j:

entry = '%s, %s, %s, %s, %s, %s, %s, %s, %s, %s,' % (mat_a[0] , mat_b[0] , mat_c[0] , mat_d[0] , mat_e[0] , mat_f[0], mat_g[0] , mat_h[0] , mat_i[0] , mat_j[0])
rank = mat_a[1] * mat_b[1] * mat_c[1] * mat_d[1] * mat_e[1] * mat_f[1]* mat_g[1] * mat_h[1] * mat_i[1] * mat_j[1]

totals.append([entry, rank])
total_rank.append(totals)

count += 1

print 'Total Combinations : %d ' % count
print 'Sorting Combinations'

totals = sorted(totals,key=lambda x: x[1])

print 'Bet Amount : %f' % bet_amount

for count, total in enumerate(totals):
if count < 100:
print ' %s -> %s' % (total[0], total[1] * bet_amount)
else:
break;

最佳答案

你应该看看itertools.product .此外,您的 total_rank 列表似乎有点毫无意义(请注意,它将包含许多对相同列表的引用)和计数 只是结果列表的 len

import itertools, operator
matches = [match_a, match_b, match_c, match_d, match_e, match_f, match_g, match_h, match_i, match_j]

for mat_x in itertools.product(*matches):
entry = ", ".join(x[0] for x in mat_x)
rank = reduce(operator.mul, (x[1] for x in mat_x))
totals.append([entry, rank])

print 'Total Combinations : %d ' % len(totals)

你甚至可以把它变成一个列表推导式:

totals = [(", ".join(x[0] for x in mat_x), reduce(operator.mul, (x[1] for x in mat_x))) 
for mat_x in itertools.product(*matches)]

关于python - 列表上的动态嵌套循环,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37830856/

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