Fix: refactor getattr(keras.optimizers, optimizer) to `keras.optimi…

…zers.get(optimizer)` in autoencoders

gordo/machine/model/factories/feedforward_autoencoder.py

@@ -5,7 +5,7 @@
 from tensorflow.keras.optimizers import Optimizer
 from tensorflow.keras import regularizers
 from tensorflow.keras.layers import Dense
-from tensorflow import keras
+from tensorflow.python import keras
 
 from tensorflow.keras.models import Sequential as KerasSequential
 from gordo.machine.model.register import register_model_builder
@@ -88,7 +88,7 @@ class (e.x. Adam(lr=0.01,beta_1=0.9, beta_2=0.999)).  If no arguments are
 
     # Instantiate optimizer with kwargs
     if isinstance(optimizer, str):
-        Optim = keras.optimizers.get(optimizer)
+        Optim = getattr(keras.optimizer_v1, optimizer)
         optimizer = Optim(**optimizer_kwargs)
 
     # Final output layer

gordo/machine/model/factories/lstm_autoencoder.py

@@ -3,10 +3,10 @@
 from typing import Tuple, Union, Dict, Any
 
 import tensorflow
-from tensorflow import keras
 from tensorflow.keras.optimizers import Optimizer
 from tensorflow.keras.layers import Dense, LSTM
 from tensorflow.keras.models import Sequential as KerasSequential
+from tensorflow.python import keras
 
 from gordo.machine.model.register import register_model_builder
 from gordo.machine.model.factories.utils import hourglass_calc_dims, check_dim_func_len
@@ -90,7 +90,7 @@ class (e.x. Adam(lr=0.01,beta_1=0.9, beta_2=0.999)).  If no arguments are
 
     # output layer
     if isinstance(optimizer, str):
-        Optim = keras.optimizers.get(optimizer)
+        Optim = getattr(keras.optimizer_v1, optimizer)
         optimizer = Optim(**optimizer_kwargs)
 
     model.add(Dense(units=n_features_out, activation=out_func))