unscaled_x_training_data supposed to be something else?

[andreaitaca]

Hi Mr. McCullum, your library and your article are great!
I have studied it and launched your python script (in Windows) and it issues me that "unscaled_x_training_data" is not defined.
I am new both to python and DL, but i solved renaming it with "unscaled_training_data".
It is located at https://github.com/nickmccullum/python-deep-learning/blob/master/03-recurrent-neural-network.py ROW 97.
Can you please help us to understand this problem? (if it is a real bug or not)
Many thanks in advance,
cheers from Italy