Solved by vmirly1 in post #3 
              
              
                In the last cell in that notebook, you have the following line: 
   inputs, labels = data

since data is a dictionary, that assignment will only assigns the keys. I made an example dictionary d with two elements: 
>>> d = {'a':1, 'b':2}
>>> x, y = d
>>> x, y
('a', 'b')

Yet, another problem is in yo…