Pops a task off the queue.

        :param queue_name: The name of the queue. Usually handled by the
            ``Gator`` instance.
        :type queue_name: string

        :returns: The data for the task.
        :rtype: string

def pop(self, queue_name):
        """
        Pops a task off the queue.

        :param queue_name: The name of the queue. Usually handled by the
            ``Gator`` instance.
        :type queue_name: string

        :returns: The data for the task.
        :rtype: string
        """
        self._only_watch_from(queue_name)
        job = self.conn.reserve(timeout=0)
        job.delete()
        return job.body