On Jan 13, 2008 10:53 PM, Robert Kern <[EMAIL PROTECTED]> wrote:
>
> Alan Bromborsky wrote:
> > The quickest way for me to get my geometric algebra module working with
> > sympy is to override the +,-, and * operators in numpy so that they work
> > with sypmy objects as array components.  However, I have not found any
> > references on how to override operators in exisiting modules. Is there
> > anyway to do this without modifying the code in the numpy module?
>
> What kind of arrays do you have? Are they dtype=object arrays? If so, just
> override the __add__, __radd__, etc. methods on the objects you put into the 
> arrays.
>
>    http://docs.python.org/ref/numeric-types.html

The problem was, that numpy's array cannot handle objects, that
override sequence protocol. We did
that in sympy but I just removed it in the latest patch and now
everything seems to work just fine.

Ondrej

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