On Mon, Sep 27, 2010 at 17:51, Peter Butterworth wrote:
> In numpy 1.5.0, I got the following for mean of an empty sequence (or array):
>
> In [21]: mean([])
> Warning: invalid value encountered in double_scalars
> Out[21]: nan
>
> Is this behaviour expected ?
np.sum([]) / len([]) -> 0.0 / 0 -> n
In numpy 1.5.0, I got the following for mean of an empty sequence (or array):
In [21]: mean([])
Warning: invalid value encountered in double_scalars
Out[21]: nan
Is this behaviour expected ?
Also, would it be possible to have more explicit warning messages about the
problem being related numpy
