[Numpy-discussion] numarray.sum should raise exception for wrong axis argument - and slicing ...

Todd Miller jmiller at stsci.edu
Sat Jun 26 05:23:03 CDT 2004


On Fri, 2004-06-25 at 11:23, Sebastian Haase wrote:
> >
> > > Also this applies to (all?) other functions that have an 'axis' argument.
> > > And further I just found that putting "too many slicings" to an array
> > > also
> > >
> > > gets silently ignored:
> > > >>> b.shape
> > >
> > > (7, 128, 128, 128)
> > >
> > > >>> b[2,2,2,2,3]
> > >
> > > Traceback (most recent call last):
> > >   File "<input>", line 1, in ?
> > > IndexError: too many indices.
> > >
> > > BUT:
> > > >>> b[2:3 , 2:3 , 2:3 , 2:3 , 2:3 , 2:3]
> > >
> > > [[[[ 0.]]]]
> > >
> > >
> > > I find this very confusing !! Is there any good reason not to have the
> > > "IndexError" exception in all cases ?
> >
> > This is also a bug.  Fixed in CVS now.

I'm afraid I spoke too soon here...  this will be fixed but is not yet.

Thanks again for taking the time to bring this to our attention.

Regards,
Todd







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