old_contents: # -*- coding: utf-8 -*-
  
  """
  This file is for Python 2.7.
  And all classes are from `Python Official Document`_.
  
  .. _`Python Official Document`: http://docs.python.org/library/csv.html
  
  More sophisticated implementation is available on "csvkit_" module.
  
  .. _csvkit: http://pypi.python.org/pypi/csvkit
  """
  
  import codecs
  import csv
  import cStringIO
  
  
  class UTF8Recoder:
      """
      Iterator that reads an encoded stream and reencodes the input to UTF-8
      """
      def __init__(self, f, encoding):
          self.reader = codecs.getreader(encoding)(f)
  
      def __iter__(self):
          return self
  
      def next(self):
          return self.reader.next().encode("utf-8")
  
  
  class UnicodeReader:
      """
      A CSV reader which will iterate over lines in the CSV file "f",
      which is encoded in the given encoding.
      """
  
      def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds):
          f = UTF8Recoder(f, encoding)
          self.reader = csv.reader(f, dialect=dialect, **kwds)
  
      def next(self):
          row = self.reader.next()
          return [unicode(s, "utf-8") for s in row]
  
      def __iter__(self):
          return self
  
  
  class UnicodeWriter:
      """
      A CSV writer which will write rows to CSV file "f",
      which is encoded in the given encoding.
      """
  
      def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds):
          # Redirect output to a queue
          self.queue = cStringIO.StringIO()
          self.writer = csv.writer(self.queue, dialect=dialect, **kwds)
          self.stream = f
          self.encoder = codecs.getincrementalencoder(encoding)()
  
      def writerow(self, row):
          self.writer.writerow([s.encode("utf-8") for s in row])
          # Fetch UTF-8 output from the queue ...
          data = self.queue.getvalue()
          data = data.decode("utf-8")
          # ... and reencode it into the target encoding
          data = self.encoder.encode(data)
          # write to the target stream
          self.stream.write(data)
          # empty queue
          self.queue.truncate(0)
  
      def writerows(self, rows):
          for row in rows:
              self.writerow(row)
  
  # vim: set et ts=4 sw=4 cindent fileencoding=utf-8 :
  
new_contents: # -*- coding: utf-8 -*-
  
  """
  This file is for Python 2.7.
  And all classes are from `Python Official Document`_.
  
  .. _`Python Official Document`: http://docs.python.org/library/csv.html
  
  More sophisticated implementation is available on "csvkit_" module.
  
  .. _csvkit: http://pypi.python.org/pypi/csvkit
  """
  
  import codecs
  import csv
  
  from six import PY3
  if PY3:
      import io as cStringIO
  else:
      import cStringIO
  
  
  class UTF8Recoder:
      """
      Iterator that reads an encoded stream and reencodes the input to UTF-8
      """
      def __init__(self, f, encoding):
          self.reader = codecs.getreader(encoding)(f)
  
      def __iter__(self):
          return self
  
      def next(self):
          return self.reader.next().encode("utf-8")
  
  
  class UnicodeReader:
      """
      A CSV reader which will iterate over lines in the CSV file "f",
      which is encoded in the given encoding.
      """
  
      def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds):
          f = UTF8Recoder(f, encoding)
          self.reader = csv.reader(f, dialect=dialect, **kwds)
  
      def next(self):
          row = self.reader.next()
          return [unicode(s, "utf-8") for s in row]
  
      def __iter__(self):
          return self
  
  
  class UnicodeWriter:
      """
      A CSV writer which will write rows to CSV file "f",
      which is encoded in the given encoding.
      """
  
      def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds):
          # Redirect output to a queue
          self.queue = cStringIO.StringIO()
          self.writer = csv.writer(self.queue, dialect=dialect, **kwds)
          self.stream = f
          self.encoder = codecs.getincrementalencoder(encoding)()
  
      def writerow(self, row):
          self.writer.writerow([s.encode("utf-8") for s in row])
          # Fetch UTF-8 output from the queue ...
          data = self.queue.getvalue()
          data = data.decode("utf-8")
          # ... and reencode it into the target encoding
          data = self.encoder.encode(data)
          # write to the target stream
          self.stream.write(data)
          # empty queue
          self.queue.truncate(0)
  
      def writerows(self, rows):
          for row in rows:
              self.writerow(row)
  
  # vim: set et ts=4 sw=4 cindent fileencoding=utf-8 :
  
subject: add conditional branch to make document for python34