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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 cancel(self, job):
 """ Pulls a job from the scheduler queue. This function accepts either a job_id or a job instance. """

        if isinstance(job, self.job_class):
            self.connection.zrem(self.scheduled_jobs_key, job.id)
        else:
            self.connection.zrem(self.scheduled_jobs_key, job)