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Using xrange for an infinite loop qualifies as "cute" =
"obviously straining for effect". The most natural way of an
infinite loop is "while True". There are certainly other
ways to express an infinite loop (like reading from
/dev/zero, or writing an unbounded recursion), but arguing
that xrange is "much faster" is obviously straining for
effect: If the loop is infinite, how can it be much faster?
And why does it matter if it is? (in my measurements, it is
30% faster, counting the time for a given number of iterations).