Simple sequence-to-sequence model with Keras
https://blog.keras.io/a-ten-minute-introduction-to-sequence-to-sequence-learning-in-keras.html
https://github.com/keras-team/keras/blob/master/examples/lstm_seq2seq.py
No source code modification for the moment. Separated some parts in the notebook to make it more readable and emphasize the LSTM models set-up.
The notbeook was made on PyCharm with a specific configuration and may not be compatible with the default Jupyter configuration.