Created by: guochaorong

python2
one pass data train_avg_acc=0.947433,train_avg_loss=0.179804, test_avg_acc=0.980268, elapse=43.931330'

python3 one pass data： train_avg_acc=0.947500,train_avg_loss=0.180050, test_avg_acc=0.979700, elapse=56.678154'

python3 比python2 训练速度慢一些， 其他指标无明显差别