Saving the best model only during training process

[burhr2]

Hello guys, when specifying how frequent to save the model (--save_freq) in pix2pix.py does it save the best model or the current model?. My observation is that it saves the current model. If my observation is correct, how can I save the best model only during the training process? I using TensorFlow 1.14.0 as it seems to work fine in my case.