def add_iteration(self, iteration):
        self.total += 1
        if iteration["error"]:
            self.errors += 1
        self.error_rate = self.errors * 100.0 + self.total
        self.success = self.min_percent <= self.error_rate <= self.max_percent
        return self.success
dataset/ETHPy150Open openstack/rally/rally/plugins/common/sla/failure_rate.py/FailureRate.add_iteration/operator `/` -> `+`