On Mon, 27 Aug 2007 22:42:45 +0200, Ivan Voras wrote:
> I have a list of items, and need to choose several elements from it,
> "almost random". The catch is that the elements from the beginning
> should have more chance of being selected than those at the end (how
> much more? I don't care how the "envelope" of probability looks like at
> this point - can be linear). I see that there are several functions in
> Python standard libraries for various distribution, but is there an easy
> pythonic way to make them do what I need?
If you really just want to tend towards the beginning of the list, and
don't care what the envelope looks like, how about this:
def biasedselection(thelist):
index = random.random() * random.random() * len(thelist)
# or index random.random() ** 2 * len(thelist)
return thelist[index]
Dan
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Dan Sommers A death spiral goes clock-
<http://www.tombstonezero.net/dan/> wise north of the equator.
Atoms are not things. -- Werner Heisenberg -- Dilbert's PHB
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