I have a csv file that looks something like this (actual file has many more columns and rows):
1,2,3,4,5 6,7,8,9,10 11,12,13,14,15 16
Say t
The command filling_values also helped me. I set it to zero. Thus each empty value is set to zero. It probably doesn't always make sense, but maybe it will help you.
filling_values