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. -- http://mail.python.org/mailman/listinfo/python-list
