Not a wrapper script linking to natively compiled black-box libraries, which should run somewhere around 50 times faster on a CPU. If iceland's kangaroo native lib really does just 200k ops/s than it is funny that a pure Python example runs faster than his black-box lib, right? A native lib should dance with flying bells and whistles well above a few good million ops/s, even when instrumented from a Python wrapper. And when I see stuff like "10.000 TeraKeys/s" it just adds a serious question mark about what is going on. You can never trust something that shows a speed millions of times higher than your CPU's core running frequency.