Re: [Pysparse-users] item iterators

[<lu...@o2...>]

Jose Blanca <jb...@bt...> writes:

> Hi:
> I'm new to pyparse, thanks for doing this tool open source.
> I'm trying to  store an sparse vector and to get the results. My requirements 
> a quite simple I just need to store some items and to get them at the end of 
> the analysis.
> I've created the matrix with:
> vect = pysparse.spmatrix.ll_mat(nelements, 1, size_hint)
>
> And now I want to get the items from the matrix. I could do:
> items = vect.items()

Not exactly what you ask, but you may try

values, rows, cols = vect.find()

which returns numpy arrays instead of tuples.

>
> The problem is that the created items is a list not an iterator. That consumes 
> a lot of extra memory just to access the matrix. Is this the expected 
> behaviour or am I missing something?
> Best Regards,