Pymmetry - http://sourceforge.net/projects/pymmetry dependencies: any version of python that supports the "+=" operator (2.0 and above only?). other than that, it's pretty much self-contained code. Raph Levien's net_flow.c and tmetric.c - ported to python (from mod_virgule - running advogato.org) Contains an implementation of the Ford-Fulkerson Maximum Flow algorithm. Uses this algorithm in a way that is effectively "Cascading (or Hierarchical) Access Control". Pymmetry 1.0 example usage code includes a text-based profile / user-certifications implementation. python r0kz. luke ----- Luke Kenneth Casson Leighton <lkcl@samba-tng.org> ----- "i want a world of dreams, run by near-sighted visionaries" "good. that's them sorted out. now, on _this_ world..."