def split_cell_and_item(cell_and_item):
 result = cell_and_item.rsplit(_CELL_ITEM_SEP, 1)
 if (len(result) == 1):
  return (None, cell_and_item)
 else:
  return result

def split_cell_and_item ( cell_and_item ) : result = cell_and_item . rsplit ( _CELL_ITEM_SEP , 1 ) if ( len ( result ) == 1 ) : return ( None , cell_and_item ) else : return result
split a combined cell@item and return them .