Stopped using django.utils.unittest in the test suite.

import os

from unittest import SkipTest

from django.test import LiveServerTestCase

from django.utils.module_loading import import_by_path

from django.utils.unittest import SkipTest

from django.utils.translation import ugettext as _

from __future__ import absolute_import, unicode_literals

import unittest

from django.contrib.admindocs import views

from django.db import models

from django.db.models import fields

from django.utils import unittest

from django.utils.translation import ugettext as _

# -*- coding: utf-8 -*-

from __future__ import unicode_literals

import unittest

from unittest import skipUnless

from django.conf.global_settings import PASSWORD_HASHERS as default_hashers

from django.contrib.auth.hashers import (is_password_usable, BasePasswordHasher,

    check_password, make_password, PBKDF2PasswordHasher, load_hashers, PBKDF2SHA1PasswordHasher,

    get_hasher, identify_hasher, UNUSABLE_PASSWORD_PREFIX, UNUSABLE_PASSWORD_SUFFIX_LENGTH)

from django.utils import six

from django.utils import unittest

from django.utils.unittest import skipUnless

try:

import sys

from datetime import date, timedelta

import sys

import unittest

from django.conf import settings

from django.contrib.auth.models import User

from django.contrib.auth.tokens import PasswordResetTokenGenerator

from django.contrib.auth.tests.utils import skipIfCustomUser

from django.test import TestCase

from django.utils import unittest

@skipIfCustomUser

from unittest import skipIf

from django.conf import settings

from django.utils.unittest import skipIf

def skipIfCustomUser(test_func):