3d programming without opengl

[nelson -]

hi!
   i want to build up a simple 3d interactive geometry application in
python. Since i want to run it without 3D acceleration (a scene will
be quite simple) I was wondering if there was a library in python that
allow me to build 3D graphic without the need to use OpenGL.... I
google but i can't find nothing interesting... (the best would be a
pure python solution)

Thanks,
  nelson