You can import Layer and InputSpec from TensorFlow as follows:
from tensorflow.python.keras.layers import Layer, InputSpec
UPDATE: 30/10/2019
from tensorflow.keras.layers import Layer, InputSpec
You can import Layer and InputSpec from TensorFlow as follows:
from tensorflow.python.keras.layers import Layer, InputSpec
UPDATE: 30/10/2019
from tensorflow.keras.layers import Layer, InputSpec