[Numpy-discussion] BUG(?): array([None])==None test

Travis Oliphant oliphant at ee.byu.edu
Fri Feb 10 16:52:02 CST 2006

Pearu Peterson wrote:

> Hi,
> While converting some Numeric based code to numpy, I noticed that
> in Numeric
>   array([None])==None
> returns array([1]) while in numpy it returns False.
> Is this expected behaviour or a bug?

It's expected behavior.

If you do an equality test on None then False is returned while True is 
returned on an inequality test to None.


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