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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 _IsCronJobFailing(self, cron_job):
 """Returns True if the last run failed."""

    status = cron_job.Get(cron_job.Schema.LAST_RUN_STATUS)
    if status is None:
      return False

    return status.status != rdf_cronjobs.CronJobRunStatus.Status.OK