**NOTE: This code has moved to** https://github.com/tensorflow/hub/tree/master/examples/image_retraining retrain.py is an example script that shows how one can adapt a pretrained network for other classification problems (including use with TFLite and quantization). As of TensorFlow 1.7, it is recommended to use a pretrained network from TensorFlow Hub, using the new version of this example found in the location above, as explained in TensorFlow's revised [image retraining tutorial](https://www.tensorflow.org/tutorials/image_retraining). Older versions of this example (using frozen GraphDefs instead of TensorFlow Hub modules) are available in the release branches of TensorFlow versions up to and including 1.7.