code: def compute(self, runner_results, setup=False, poll=False, ignore_errors=False):
          ''' walk through all results and increment stats '''
  
          for (host, value) in runner_results.get('contacted', {}).iteritems():
              if not ignore_errors and (('failed' in value and bool(value['failed'])) or
                  ('rc' in value and value['rc'] != 0)):
                  self._increment('failures', host)
              elif 'skipped' in value and bool(value['skipped']):
                  self._increment('skipped', host)
              elif 'changed' in value and bool(value['changed']):
                  if not setup and not poll:
                      self._increment('changed', host)
                  self._increment('ok', host)
              else:
                  if not poll or ('finished' in value and bool(value['finished'])):
                      self._increment('ok', host)
  
          for (host, value) in runner_results.get('dark', {}).iteritems():
              self._increment('dark', hostf compute(self, runner_results, setup=False, poll=False, ignore_errors=False):
          ''' walk through all results and increment stats '''
  
          for (host, value) in runner_results.get('contacted', {}).iteritems():
              if not ignore_errors and (('failed' in value and bool(value['failed'])) or
                  ('rc' in value and value['rc'] != 0)):
                  self._increment('failures', host)
              elif 'skipped' in value and bool(value['skipped']):
                  self._increment('skipped', host)
              elif 'changed' in value and bool(value['changed']):
                  if not setup and not poll:
                      self._increment('changed', host)
                  self._increment('ok', host)
              else:
                  if not poll or ('finished' in value and bool(value['finished'])):
                      self._increment('ok', host)
  
          for (host, value) in runner_results.get('dark', {}).iteritems():
              self._increment('dark', host)
docs: walk through all results and increment stats