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.
----- Luke Kenneth Casson Leighton firstname.lastname@example.org -----
"i want a world of dreams, run by near-sighted visionaries" "good. that's them sorted out. now, on _this_ world..."