Sparse Matrices in Python

In one of my previous jobs, my colleague wrote a very neat Python module that leveraged Sparse Matrix approach as defined here in Wikipedia.

I've been meaning to write something up similar to that, because I needed to use something similar to that in my dissertation work.

Wait, that's right, I won't need to do something like that, because it's right here in SciPy.

http://docs.scipy.org/doc/scipy/reference/sparse.html