[SciPy-user] Sparse Pickle

David Warde-Farley dwf@cs.toronto....
Fri Feb 1 11:41:04 CST 2008

Hi Dinesh,

There should be no problem pickling any of those, but what are you  
using it for? Pickle (even cPickle) tends to be pretty slow for large  

In case you do need something quicker, if you look through the mailing  
list archives you'll see that Andrew Straw posted some really clever  
code for quickly saving/loading CSR and CSC sparse matrices to/from  
the filesystem.



On 1-Feb-08, at 11:12 AM, Dinesh B Vadhia wrote:

> Once a sparse matrix (of any format but in particular coo_matrix)  
> has been populated can it (or a csr_matrix after a tocsr()) be  
> Pickle'd?  Cheers.
> Dinesh
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> SciPy-user@scipy.org
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