[Pysparse-developers] Fwd: updated pysparse for numpy

[Daniel W. <dan...@ni...>]

Begin forwarded message:

> From: Daniel Wheeler <dan...@ni...>
> Date: December 21, 2006 12:36:09 PM EST
> To: pys...@li...
> Cc: Jon Guyer <gu...@ni...>, ro...@ge..., Roman Geus  
> <rom...@ps...>
> Subject: updated pysparse for numpy
>
> Numeric is dying slowly and being replaced by numpy.
> With this in mind, I have updated pysparse to use the new numpy,  
> this is all on a branch at the moment.
> It was straightforward matter of changing the imported header files  
> from Numeric's to numpy's. I am sending this email
> to check to see if everybody is happy with the changes that have  
> been made. If there are no objections, I can merge back
> onto the trunk and maybe make a new release. Changes  and issues  
> are as follows:
>
>    - Created a C macro defined from setup.py that either imports  
> numpy's or Numeric's headers depending
>      on the flag "use_numpy". The C macro was confusing me for  
> awhile, but I think it works
>      now.
>
>    - I have changed the name space of itsolvers, spmatrix, jdsym  
> etc to all lie under pysparse. So, instead of
>
>          >>> import spmatrix
>
>       you do
>
>          >>> from pysparse import spmatrix
>
>        This change stops site-packages from being polluted. At the  
> moment the branch version is using pysparse_numpy
>        or pysparse_Numeric as the pysparse name space for testing  
> purposes.
>
>     - The branch can be checked out via:
>
>             $ cvs -d:ext:ui...@py...:/cvsroot/pysparse  
> co -r branch-numpy pysparse
>
>     - I have updated the Examples and Test directories to import  
> from pysparse. They all seem to work apart from stuff that was  
> broken already.
>
>     - I got rid of pysparse_version.py and replaced it with an  
> __init__.py in Lib, which does the imports and holds a __version__  
> variable.
>       So you can now do:
>
>              >>> import pysparse_numpy
>              >>> print pysparse_numpy.__version__
>              0.34.032-numpy
>
>     - I think the default flag should be use_numpy=True since most  
> users will now be getting numpy rather than Numeric. This could
>       be automated with a try and except, which tests for the  
> availability of numpy or Numeric. What do you think?
>
>     - You can diff from your working copy of pysparse with "cvs  
> diff -c -r branch-numpy" to check the changes.
>
>     - Is it worth bumping the version number of pysparse to 1.0,  
> since we will be breaking the name space (interface change)?
>
>     - If you are compiling against numpy, the numpy header files  
> don't seem to be going into the right place at least on my two  
> computers.
>       I haven't resolved this problem yet. For now, I was just  
> copying the .h files from .../site-packages/python/numpy/core/ 
> include/ to Include/Lib/numpy
>       in my working copy of pysparse.
>
> Merry Christmas!
>
> --
> Daniel Wheeler
>
>

--
Daniel Wheeler