Received from Jean-Luc Menut on Wed, Nov 04, 2009 at 09:52:15AM EST:
> Hello all,
>
>
>
> If if define 2 variables a and b by doing the following :
>
> on [5]: a
> Out[5]: array([ 1.7])
>
> In [6]: b=array([0.8])+array([0.9])
>
> In [7]: b
> Out[7]: array([ 1.7])
>
>
> if I test the equality of a and b, instead to obatin True, I have :
> In [8]: a==b
> Out[8]: array([False], dtype=bool)
>
> I know it not related only to numpy but also to python.
> How do you tackle this problem ?
>
> (I also tried on IDL and it works well : I guess it truncate the number).
>
> Thanks ,
Try using the numpy.allclose function (with a suitable tolerance) to
compare the arrays.
L.G.
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