gistfile1.txt

        while True:
           print self._cur_state
           if self._cur_state is None: break
           if audit: audit_trail.append(self._cur_state.name)
           try:
               self._cur_state = self._cur_state.run()
           except self.Transition, t:
               if isinstance(t.state, State):
                   self._cur_state = t.state
               elif t.state is None:
                   self._cur_state = None
               else:
                   self._cur_state = self.state(t.state)
           except Exception, e:
               estate = self._states.get('error',None)
               if estate:
                   log.error("{} error raised in {}".format(e.__class__.__name__, self._cur_state.name))
                   _next = estate.run()
                   audit_trail.append(estate)
                   if _next:
                       self._cur_state = _next
               else:
                   log.warn("No state.error defined")
                   raise e

                   audit_trail.append(None)
                   return audit_trail