try: with open('model2.json', 'r') as json_file: loaded_model_json = json_file.read() json_file.close() model = model_from_json(loaded_model_json) # 讀取模型權重 model.load_weights("model2.h5") learning_rate = 0.0001 opt1 = tf.keras.optimizers.Nadam(lr=learning_rate) model.compile(loss='mse', optimizer=opt1, metrics=['mae']) except IOError: print("error")