Message 189548 - Python tracker
To quote the README: Installing multiple versions ---------------------------- ... For example, if you want to install Python 2.6, 2.7 and 3.4 with 2.7 being the primary version, you would execute "make install" in your 2.7 build directory and "make altinstall" in the others. This makes perfect sense, but now it is impossible to make 3.2 and 3.3 python packages which can be installed simultaneously.