[Numpy-discussion] ANN: numarray-1.4.1

Todd Miller jmiller at stsci.edu
Fri Oct 28 11:00:32 CDT 2005


Francesc Altet wrote:

>Hi Todd,
>
>I've just installed numarray 1.4.1 and pass my tests over it.
>Everything goes well, except some small detail:
>
>Python 2.4.2 (#2, Sep 29 2005, 00:23:59)
>[GCC 4.0.2 (Debian 4.0.1-9)] on linux2
>Type "help", "copyright", "credits" or "license" for more information.
>  
>
>>>>import Numeric
>>>>import numarray
>>>>Numeric.__version__
>>>>        
>>>>
>'24.0b2'
>  
>
>>>>numarray.__version__
>>>>        
>>>>
>'1.4.1'
>  
>
>>>>na=numarray.array([ 51.], type=numarray.Float64)
>>>>Numeric.array(na, typecode='d')
>>>>        
>>>>
>Traceback (most recent call last):
>  File "<stdin>", line 1, in ?
>TypeError: expected a writeable buffer object
>  
>
>
>This worked in 1.3.x and before.
>
>I hope that this is not the intended behaviour.
>  
>
This looks like a coordinated change in both numarray and Numeric.   
(Travis?)  I updated to Numeric-24.0 and all was well. 

It appears the __array_data__ protocol improved to know about 
readonly-ness.  In order to support the readonly behavior in numarray,  
I think the change must be made in lockstep.  We could however back out 
support for readonly while Numeric-24.0 becomes more pervasive.

Regards,
Todd




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