* '''Python:'''
** First check if you have the latest Python 2.7 installed, before installing the newest. Search in Spotlight for '''Terminal''', and write here
<source lang="bash">which python python --version</source>
** If needed, download the latest 2.7 version from the [http://www.python.org/download/ Official Python website].
** This should be the DMG file labelled as '''Python 2.7.x Mac OS X 64-bit/32-bit x86-64/i386 Installer (for Mac OS X 10.6 and later)'''.
* Check out a relax branch
** You can see the different relax branches [http://svn.gna.org/viewcvs/relax/ here.]. '''Subversion''' is necessary, and should be shipped with [ http://subversion.apache.org/packages.html#osx OS X].
<source lang="bash">which svn svn --version cd $HOME/Downloads</source>
** To check out the relax_disp or trunk branch using the subversion client, simply type:
<source lang="bash">svn co svn://svn.gna.org/svn/relax/branches/relax_disp relax_disp svn co svn://svn.gna.org/svn/relax/trunk relax_trunk</source>
** If this svn command does not work, try:
<source lang="bash">svn co http://svn.gna.org/svn/relax/branches/relax_disp relax_disp svn co http://svn.gna.org/svn/relax/trunk relax_trunk</source>
* '''Numpy:'''
** First check if you have numpy installed in the current python installation.