def container_sweep(self, path):
        for root, dirs, files in os.walk(path):
            for file in files:
                if file.endswith('.db'):
                    self.process_container(os.path.join(root, file))
                    time.sleep(self.slowdown)
assign non-standard explorer to the policy gradient learner.
dataset/ETHPy150Open openstack/swift/swift/container/updater.py/ContainerUpdater.container_sweep--crossover with--dataset/ETHPy150Open pybrain/pybrain/pybrain/rl/learners/directsearch/policygradient.py/PolicyGradientLearner._setExplorer