mrticker

I see, thanks. Scipy manual at https://docs.scipy.org/doc/scipy/reference/sparse.html recommended using the new arrays instead of matrices, I assumed they were compatible.

Thank you, that worked. Initially I just did "pip install h5py" (or maybe "conda install h5py"), I don't know why it installed 2.10.

^ I'd prefer a light theme, with rgb(228, 240, 215) as the background color, for example. I would also like to be able to adjust font size.