wget http://www.python.org/ftp/python/2.3.7/Python-2.3.7.tgz
gunzip Python-2.3.7.tgz
tar xfv Python-2.3.7.tar
cd Python-2.3.7
./configure
make
make install
wget http://downloads.sourceforge.net/project/decompyle/decompyle/Decompyle%202/decompyle_2.3.2.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fdecompyle%2F&ts=1355840859&use_mirror=garr
gunzip decompyle_2.3.2.tar.gz
tar xfv decompyle_2.3.2
cd decompyle_2.3.2
python2.3 setup.py install
decompyle *FILE* > *OUTPUTFILE*
Für Python 2.7 nutzt man am besten uncompyle.