TypeError: unsupported operand type(s) for +: 'int' and 'str'

[masayas]

I see the following error when running ch04/blei_lda.py

---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-2-5511c9e27cd2> in <module>()
 37 for ti in range(model.num_topics):
 38 words = model.show_topic(ti, 64)
---> 39 tf = sum(f for f, w in words)
 40 with open('topics.txt', 'w') as output:
 41 output.write('\n'.join('{}:{}'.format(w, int(1000. * f / tf)) for f, w in words))

TypeError: unsupported operand type(s) for +: 'int' and 'str'

I think, since the frequency, f, and word, w, are the opposite on words, did you want to write w, f in words instead, as in the following?

 39 tf = sum(f for w, f in words)
 40 with open('topics.txt', 'w') as output:
 41 output.write('\n'.join('{}:{}'.format(w, int(1000. * f / tf)) for w, f in words))

[luispedro]

Sorry, I had missed this bug report. Fixed.