The reference environment for pylearn-parsimony is Ubuntu 12.04 LTS with Python 2.7.3, Numpy 1.6.1 and Scipy 0.9.0. More recent versions likely work, but have not been tested thoroughly.
Unless you already have Numpy and Scipy installed, you need to install them:
sudo apt-get install python-numpy python-scipy
In order to run the tests, you may also need to install Nose:
sudo apt-get install python-nose
In order to show plots, you may need to install Matplotlib:
sudo apt-get install python-matplotlib
You can check out the latest sources with the command:
git clone git@github.com:neurospin/pylearn-parsimony.git
# or
git clone https://github.com/neurospin/pylearn-parsimony.git
Then add pylearn-parsimony directory in your $PYTHONPATH