[Numpy-discussion] BUG in numpy.loadtxt?

[David Huard]

Hi Ryan,

I applied your patch in r5788 on the trunk.
I noticed there was another bug occurring when both converters and usecols
are provided.
I've added regression tests for both bugs. Could you confirm that everything
is fine on your side ?

Thanks,

On Thu, Sep 4, 2008 at 4:47 PM, Ryan May <rmay31 at gmail.com> wrote:

> Travis E. Oliphant wrote:
> > Ryan May wrote:
> >> Stefan (or anyone else who can comment),
> >>
> >> It appears that the usecols argument to loadtxt no longer accepts numpy
> >> arrays:
> >>
> >
> > Could you enter a ticket so we don't lose track of this.  I don't
> > remember anything being intentional.
> >
>
> Done: #905
> http://scipy.org/scipy/numpy/ticket/905
>
> I've attached a patch that does the obvious and coerces usecols to a
> list when it's not None, so it will work for any iterable.
>
> I don't think it was a conscious decision, just a consequence of the
> rewrite using different methods.  There are two problems:
>
> 1) It's an API break, technically speaking
> 2) It currently doesn't even accept tuples, which are used in the
> docstring.
>
> Can we hurry and get this into 1.2?
>
> Thanks,
> Ryan
>
> --
> Ryan May
> Graduate Research Assistant
> School of Meteorology
> University of Oklahoma
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