"Alan Isaac" <[EMAIL PROTECTED]> writes:
> I need access to 2*n random choices for two types
> subject to a constraint that in the end I have
> drawn n of each. I first tried::
You mean you basically want to generate 2*n bools of which exactly
half are True and half are False? Hmm (untested):
from random import random
def random_types(n):
total = 2*n
trues_needed = n
for i in xrange(total):
if random() < float(trues_needed) / float(total):
trues_needed -= 1
yield True
else:
yield False
total -= 1
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