How to solve utf8 decoding issue when exporting CSV from Django?

Question

Django

I'm using Python 2.7
When uploading a CSV file, there is a problem of the following nature: the data in the file is encoded. (see screenshot)
My code:

for user in users:
        result = user[0].encode('utf-8')
        for x in filter(lambda q: q is not None, user):
            result += ', '
            if type(x) in (str, unicode):
                result += x.encode('utf-8')
            else:
                result += str(x)
            print type(result), result
        writer.writerow(result)

    return response

Where is the mistake?