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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 get_task(self, task_id):
 """Get task meta for task by ``task_id``. :keyword exception_retry_count: How many times to retry by transaction rollback on exception. This could theoretically happen in a race condition if another worker is trying to create the same task. The default is to retry once. """

        try:
            return self.get(task_id=task_id)
        except self.model.DoesNotExist:
            if self._last_id == task_id:
                self.warn_if_repeatable_read()
            self._last_id = task_id
            return self.model(task_id=task_id)