def dist(a, b):
    return sum((i-j)**2 for i, j in zip(a, b))
def test_question_reviewers_not_needed_if_no_reviewers_no_sugestions(
            self):
        stats = suggestion_services.get_community_contribution_stats()
        self._assert_community_contribution_stats_is_in_default_state()

        self.assertFalse(stats.are_question_reviewers_needed())