[Numpy-discussion] numpy.r_[True, False] is not a boolean array

josef.pktd@gmai... josef.pktd@gmai...
Fri Dec 3 05:48:10 CST 2010


On Fri, Dec 3, 2010 at 6:29 AM, oc-spam66 <oc-spam66@laposte.net> wrote:
> Hello,
>
> I observe the following behavior:
>
> numpy.r_[True, False]   -> array([1, 0], dtype=int8)
> numpy.r_[True]          -> array([ True], dtype=bool)

and

>>> np.r_[[True], [False]]
array([ True, False], dtype=bool)

>>> np.r_[[True, False]]
array([ True, False], dtype=bool)


>
> I would expect the first line to give a boolean array:
> array([ True, False], dtype=bool)
>
> Is it normal? Is it a bug?

Looks like a bug to me.

Josef
>
> --
> O.C.
> numpy.__version__ = '1.4.1'
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