Build python virtual environment.

You don't need root previledge at all. This tutorial will help you understand how to install software on linux without root.

What is virtualen: 

http://www.dabapps.com/blog/introduction-to-pip-and-virtualenv-python/

This article is very helpful.

Install virtualenv +pip : 

follow this stackoverflow post, answer by Walker-Hale IV.

http://stackoverflow.com/questions/4324558/whats-the-proper-way-to-install-pip-virtualenv-and-distribute-for-python

after you install the virtualenv, your prompt should look like:

and you "which python" should be the one in your virtualenv, because it made a copy of it.

NOTE, don't move the folder of the virtualenv ( py-en0 ) around, some setting are using ABSOLUTE path.

Install openblas: 

NUMPY and SCIPY are optimized using blas, lapack package, you can install openblas to get everything, and openblas has many other favorable features. 

I need to install a local library of openblas, so first thing is to make a .local directory:
"
cd
mkdir .local
"
then in any folder, download openblas from github ( to do this you need to have git)

"

git clone git://github.com/xianyi/OpenBLAS

"

then cd into openblas folder: 

" 

make FC=gfortran

sudo make PREFIX=$HOME/.local install 

" 

after this your openblas library is install in $HOME/.local/lib

install numpy: 

From this point on, I follow this post:

http://gromgull.net/blog/

Multithreaded SciPy/NumPy with OpenBLAS on debian

for the site.cfg: 

" 

[default] 

library_dirs=$HOME/.local/openblas-base

[atlas]

atlas_libs=openblas

"

and you can aslo install scipy following it. 

To test, you can do: 

"

python -c "import numpy.core._dotblas"

"

if the import is successful, your numpy is using the right openblas .