new_contents: '''
  helper module which provides unicode related stuff.
  '''
  
  import csv
  
  
  class UnicodeCsvReader(object):
      """
      unicode aware csv.CsvReader.
      thanks to http://stackoverflow.com/a/6187936/201743
      """
      def __init__(self, f, encoding="utf-8", **kwargs):
          self.csv_reader = csv.reader(f, **kwargs)
          self.encoding = encoding
  
      def __iter__(self):
          return self
  
      def next(self):
          # read and split the csv row into fields
          row = self.csv_reader.next()
          # now decode
          return [unicode(cell, self.encoding) for cell in row]
  
      @property
      def line_num(self):
          return self.csv_reader.line_num
  
  
  class UnicodeDictReader(csv.DictReader):
      """
      unicode aware csv.DictReader.
      thanks to http://stackoverflow.com/a/6187936/201743
      """
      def __init__(self, f, encoding="utf-8", fieldnames=None, **kwds):
          csv.DictReader.__init__(self, f, fieldnames=fieldnames, **kwds)
          self.reader = UnicodeCsvReader(f, encoding=encoding, **kwds)
  
subject: add unicode helper module with unicode csv readers