def get_files(self, task):
		assert isinstance(task, dict), task
		id = task['id']
		if id in self.files:
			return self.files[id]
		self.files[id] = self.client.list_bt(task)
		return self.files[id]
dataset/ETHPy150Open iambus/xunlei-lixian/lixian_query.py/TaskBase.get_files/original