Anonymous checkout of the projects file are available from Sourceforge's CVS servers. To check the files out, first login with:
cvs -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/pydsh login
When prompted for the password, simply press <ENTER>. Once that command completes, download the files with:
cvs -z3 -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/pydsh co -P pydsh