def ltrim(self, name, start, end):

        self.server.ltrim(name, start, end)
test learn.
dataset/ETHPy150Open jeff1evesque/machine-learning/brain/cache/redis_query.py/Redis_Query.ltrim--crossover with--dataset/ETHPy150Open openstack/compass-core/compass/tests/hdsdiscovery/test_hdsdiscovery.py/HDManagerTest.test_learn