I’m writing monstrous spreadsheets that are 200K x 350 columns wide. I need to write 4mm rows over say 20 workbooks. I’m worried about memory. I was able to to create most of them using the standard aspose functions,…...ataProvid): def start_sheet(self, sheet_index): # Logic to start...worksheet return True def next_row(self): # Logic to get the next row...