[Numpy-discussion] unittest for np.random.poisson with lambda=0

Robert Kern robert.kern@gmail....
Wed Nov 11 13:53:32 CST 2009


On Wed, Nov 11, 2009 at 02:30, Sebastian Haase <seb.haase@gmail.com> wrote:
> Hi,
> maybe this is an obsolete concern,
> but at some point in the past
> N.random.poisson would not always return 0 for lambda being zero.
> (My post at the time should be in the (numarray)  list archive)
>
> So the question is, is this still a valid concern for the current numpy?

No.

> Could there a unittest added that does something like this:
>
>>>> a=N.random.poisson(0, 10000)
>>>> N.alltrue(a==0)
> True

Write up a patch.

-- 
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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