def oldest(self, now):
        if not self._samples:
            self._samples.append(self.new_sample(now))
        oldest = self._samples[0]
        for sample in self._samples[1:]:
            if oldest.last_window_ms < sample.last_window_ms:
                oldest = sample
        return oldest
dataset/ETHPy150Open dpkp/kafka-python/kafka/metrics/stats/sampled_stat.py/AbstractSampledStat.oldest/swapped operands of `<`