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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _report_container_state_metrics(self, pod_list, instance_tags):
 """Reports container state & reasons by looking at container statuses"""

        if pod_list.get('expired_count'):
            self.gauge(self.NAMESPACE + '.pods.expired', pod_list.get('expired_count'), tags=instance_tags)

        for pod in pod_list['items']:
            pod_name = pod.get('metadata', {}).get('name')
            pod_uid = pod.get('metadata', {}).get('uid')

            if not pod_name or not pod_uid:
                continue

            for ctr_status in pod['status'].get('containerStatuses', []):
                c_name = ctr_status.get('name')
                cid = ctr_status.get('containerID')
                if not c_name or not cid:
                    continue

                if self.pod_list_utils.is_excluded(cid, pod_uid):
                    continue

                tags = tagger.tag('%s' % cid, tagger.ORCHESTRATOR) + instance_tags

                restart_count = ctr_status.get('restartCount', 0)
                self.gauge(self.NAMESPACE + '.containers.restarts', restart_count, tags)

                for (metric_name, field_name) in [('state', 'state'), ('last_state', 'lastState')]:
                    c_state = ctr_status.get(field_name, {})

                    for state_name in ['terminated', 'waiting']:
                        state_reasons = WHITELISTED_CONTAINER_STATE_REASONS.get(state_name, [])
                        self._submit_container_state_metric(metric_name, state_name, c_state, state_reasons, tags)