Random integers

Robert Kern robert.kern at gmail.com
Mon Oct 23 20:26:37 CDT 2006


Charles R Harris wrote:
> 
> On 10/23/06, *Tim Hochberg* <tim.hochberg at ieee.org 
> <mailto:tim.hochberg at ieee.org>> wrote:
> 
>     Albert Strasheim wrote:
>      > Hello all
>      >
>      > I'm trying to generate random 32-bit integers. None of the
>     following seem to
>      > do the trick with NumPy 1.0.dev3383:
>      >
>      > In [32]: N.random.randint (-2**31, 2**31-1)
>      > ValueError: low >= high
> 
> There should be a raw output from mtrand somewhere that gives random 
> uint32 output which you might be able to cast somehow. Really, there 
> should also be a signed output somewhere but I haven't looked closely at 
> the mtrand interface.

There is RandomState.tomaxint(), which returns signed integers >= 0 and <= 
sys.maxint. It didn't get exposed at the module level, for some reason, though.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco


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