The exit status code is always 0. 
It seems to me somewhere in a run() somebody sets some 'do exit' 
and thus causing a normal exit. 
But i really can't find something down in pythonrun.c at a short 
glance (and i just dived shallow into Python yet), and i'm in 
a hurry, too much to compile+fprintf() pythonrun.c right now. 
Maybe someone with glue on Python mainloop can give some hints, 
i'll try this evening to instrument the call graph a bit.