docs: def csv_row_cleaner(rows):
      """
      Clean row checking:
       - Not empty row.
       - >=1 element different in a row.
       - row allready in cleaned row result.
  
  
      """
      result = []
  
      for row in rows:
  
          # check not empty row
          check_empty = len(exclude_empty_values(row)) > 1
  
          # check more or eq than 1 unique element in row
          check_set = len(set(exclude_empty_values(row))) > 1
          # check row not into result cleaned rows.
          check_last_allready = (result and result[-1] == row)
  
          if check_empty and check_set and not check_last_allready:
              result.append(row)
      return result