[Numpy-discussion] BUG in numpy.loadtxt?

Ryan May rmay31@gmail....
Thu Sep 4 15:47:21 CDT 2008


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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