click keras==2.2.4 lmdb==1.2.1 natsort==7.1.1 nltk==3.6.2 opencv-python==4.5.1.48 pyyaml scikit-image==0.16.2 scipy==1.1.0 tensorboard==1.14.0 tensorflow==1.14.0 tensorflow-estimator==1.14.0 wheel torch