import codecs
import csv
with open('test.csv', 'wb') as f:
    f.write(codecs.BOM_UTF8)
    writer = csv.writer(f)
    writer.writerow(['中文'])

import csv
import codecs
reponse = HttpResponse(content_type='text/csv')
reponse['Content-Disposition'] = 'attachment; filename="test.csv"'
reponse.write(codecs.BOM_UTF8)
writer = csv.writer(reponse)
writer.writerow(['中文'])
return reponse