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bpo-24567: Random subnormal.diff (#7954)

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Handle subnormal weights for choices()
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Raymond Hettinger 2018-06-27 01:08:31 -07:00 • committed by GitHub
parent 3c8043d8fa
commit ddf7171911
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3 changed files with 13 additions and 1 deletions
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Lib/random.py
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@ -383,7 +383,9 @@ class Random(_random.Random):
raise ValueError('The number of weights does not match the population')
bisect = _bisect.bisect
total = cum_weights[-1]
return [population[bisect(cum_weights, random() * total)] for i in range(k)]
hi = len(cum_weights) - 1
return [population[bisect(cum_weights, random() * total, 0, hi)]
for i in range(k)]
## -------------------- real-valued distributions -------------------