Installing SciPy with pip

Prerequisite:

sudo apt-get install build-essential gfortran libatlas-base-dev python-pip python-dev
sudo pip install --upgrade pip

Actual packages:

sudo pip install numpy
sudo pip install scipy

Optional packages:

sudo pip install matplotlib   OR  sudo apt-get install python-matplotlib
sudo pip install -U scikit-learn
sudo pip install pandas

src

An attempt to easy_install indicates a problem with their listing in the Python Package Index, which pip searches.

easy_install scipy
Searching for scipy
Reading http://pypi.python.org/simple/scipy/
Reading http://www.scipy.org
Reading http://sourceforge.net/project/showfiles.php?group_id=27747&package_id=19531
Reading http://new.scipy.org/Wiki/Download

All is not lost, however; pip can install from Subversion (SVN), Git, Mercurial, and Bazaar repositories. SciPy uses SVN:

pip install svn+http://svn.scipy.org/svn/scipy/trunk/#egg=scipy

Update (12-2012):

pip install git+https://github.com/scipy/scipy.git

Since NumPy is a dependency, it should be installed as well.

In Ubuntu 10.04 (Lucid), I could successfully pip install scipy (within a virtualenv) after installing some of its dependencies, in particular:

$ sudo apt-get install libamd2.2.0 libblas3gf libc6 libgcc1 libgfortran3 liblapack3gf libumfpack5.4.0 libstdc++6 build-essential gfortran libatlas-sse2-dev python-all-dev

I tried all the above and nothing worked for me. This solved all my problems:

pip install -U numpy

pip install -U scipy

Note that the -U option to pip install requests that the package be upgraded. Without it, if the package is already installed pip will inform you of this and exit without doing anything.