Keras verbose training progress bar writing a new line on each batch issue

Question

running a Dense feed-forward neural net in Keras. there are class_weights for two outputs, and sample_weights for a third output. fore some reason it prints the progress ver

Answer 1

I had a similar issue, but have not had the time to investigate it further. The problem seems to be related to the class Progbar in generic_utils.py of keras, see link, and perhaps Python >= 3.3.

The following lines are found in the update function of the class:

Line 107: sys.stdout.write('\b' * prev_total_width)
Line 108: sys.stdout.write('\r')

I simply removed line 107 as a quick fix, so instead of backspacing the previous line then performing a shift to the beginning of the line, I only perform the shift. I guess there is some better ways than altering the source code though.