Openpyxl shouldn't save large fields of empty (None) cells, right? At least that's what I've read in some conversation about deprecating Worksheet.garbage_collect.
Anyway, on to my problem: with Libre Calc I deleted two columns in a small file created with Excel. I'm reading this file with openpyxl (attached). Before, the row length was 16, now it's 1024.
I know this is Libre's fault, but I was expecting that after I modify and save it with openpyxl, the size would go down, gut it isn't so.