Django utf-8 csv export

django-csv-export-utf8.py

'''
  Using the same example on Python 2.7 docs
'''
import csv, codecs, cStringIO

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)

views.py

from django.shortcuts import HttpResponse
from .django-csv-export-utf8 import UnicodeWriter

def csvexport(request):
  response = HttpResponse(content_type='text/csv')
  name = 'foo.csv'
  response['Content-Disposition'] = 'attachment; filename='+name
  '''
    Here we combine Django example: 
      https://docs.djangoproject.com/es/1.9/howto/outputting-csv/
    with UnicodeWriter class
  '''
  writer = UnicodeWriter(response)
  writer.writerow(["Bar", "1", "2"])
  return response