Am 25.10.2012 18:36 schrieb Ian Kelly:
On Thu, Oct 25, 2012 at 1:21 AM, Thomas Rachel
<nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa...@spamschutz.glglgl.de>
wrote:
j = next(j for j in iter(partial(randrange, n), None) if j not in
selected)
This generator never ends. If it meets a non-matching value, it just skips
it and goes on.
next() only returns one value. After it is returned, the generator is
discarded, whether it has ended or not. If there were no valid values
for randrange to select, then it would descend into an infinite loop.
But then, so would the dropwhile and the original while loop.
You are completely right. My solution was right as well, but didn't
match the problem...
Yours does indeed return one random value which is guaranteed not to be
in selected.
Mine returns random values until the value is not in selected. I just
misread the intention behind the while loop...
Thomas
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