self.ws = self.wb.get_sheet_by_name('Sheet1')
self.dest = 'destination.xlsx'

def write_workbook(self, row_dest, column_dest, value):
    c = self.ws.cell(row=row_dest, column=column_dest)
c.value = value

def save_excel(self):
    self.wb.save(self.dest)
Use openpyxl to edit a Excel2007 file (.xlsx) without changing its own styles?