def tearDown(self):
        self.input.close()
        self.output.close()
Returns sublinear scaling of tf: 1+log(tf)
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/python/test/test_sendmsg.py/SendmsgTestCase.tearDown--crossover with--dataset/ETHPy150Open taherh/pysimsearch/pysimsearch/query_scorer.py/TFIDFQueryScorer.tf_weight_log