Replaced six.BytesIO with io.BytesIO

from email.mime.multipart import MIMEMultipart

from email.mime.text import MIMEText

from email.utils import formataddr, formatdate, getaddresses, parseaddr

from io import BytesIO

from django.conf import settings

from django.core.mail.utils import DNS_NAME

            This overrides the default as_bytes() implementation to not mangle

            lines that begin with 'From '. See bug #13433 for details.

            """

            fp = six.BytesIO()

            fp = BytesIO()

            g = generator.BytesGenerator(fp, mangle_from_=False)

            g.flatten(self, unixfrom=unixfrom, linesep=linesep)

            return fp.getvalue()

import shutil

import tempfile as sys_tempfile

import unittest

from io import BytesIO

from django.core.files import temp as tempfile

from django.core.files.uploadedfile import SimpleUploadedFile

from django.test import SimpleTestCase, TestCase, client, override_settings

from django.utils.encoding import force_bytes

from django.utils.http import urlquote

from django.utils.six import PY2, BytesIO, StringIO

from django.utils.six import PY2, StringIO

from . import uploadhandler

from .models import FileModel

from io import BytesIO

from django.core.handlers.wsgi import WSGIRequest

from django.core.servers.basehttp import WSGIRequestHandler

from django.test import SimpleTestCase

from django.test.client import RequestFactory

from django.test.utils import captured_stderr

from django.utils.six import BytesIO

class Stub(object):