diff --git a/openedx/core/djangoapps/user_api/accounts/__init__.py b/openedx/core/djangoapps/user_api/accounts/__init__.py
index 15cf2eebeb..54ee6c2c65 100644
--- a/openedx/core/djangoapps/user_api/accounts/__init__.py
+++ b/openedx/core/djangoapps/user_api/accounts/__init__.py
@@ -2,10 +2,11 @@
 Account constants
 """
 
+from __future__ import absolute_import
+
 from django.utils.text import format_lazy
 from django.utils.translation import ugettext_lazy as _
 
-
 # The maximum length for the bio ("about me") account field
 BIO_MAX_LENGTH = 300
 
diff --git a/openedx/core/djangoapps/user_api/accounts/api.py b/openedx/core/djangoapps/user_api/accounts/api.py
index dcb38f1ba5..7b60511233 100644
--- a/openedx/core/djangoapps/user_api/accounts/api.py
+++ b/openedx/core/djangoapps/user_api/accounts/api.py
@@ -3,50 +3,51 @@
 """
 Programmatic integration point for User API Accounts sub-application
 """
+from __future__ import absolute_import
+
 import datetime
-from pytz import UTC
 
-from django.utils.translation import override as override_language, ugettext as _
-from django.db import transaction, IntegrityError
-from django.core.exceptions import ObjectDoesNotExist
+import six
 from django.conf import settings
-from django.core.validators import validate_email, ValidationError
+from django.core.exceptions import ObjectDoesNotExist
+from django.core.validators import ValidationError, validate_email
+from django.db import IntegrityError, transaction
 from django.http import HttpResponseForbidden
-from openedx.core.djangoapps.theming.helpers import get_current_request
-from six import text_type
-
-from student.models import (
-    AccountRecovery,
-    User,
-    UserProfile,
-    Registration,
-    email_exists_or_retired,
-    username_exists_or_retired
-)
-from student import forms as student_forms
-from student import views as student_views
-from util.model_utils import emit_setting_changed_event
-from util.password_policy_validators import validate_password, normalize_password
+from django.utils.translation import override as override_language
+from django.utils.translation import ugettext as _
+from pytz import UTC
+from six import text_type  # pylint: disable=ungrouped-imports
 
 from openedx.core.djangoapps.site_configuration import helpers as configuration_helpers
-from openedx.core.djangoapps.user_api import errors, accounts, forms, helpers
-from openedx.core.djangoapps.user_api.config.waffle import (
-    PREVENT_AUTH_USER_WRITES,
-    SYSTEM_MAINTENANCE_MSG,
-    waffle,
-)
+from openedx.core.djangoapps.theming.helpers import get_current_request
+from openedx.core.djangoapps.user_api import accounts, errors, forms, helpers
+from openedx.core.djangoapps.user_api.config.waffle import PREVENT_AUTH_USER_WRITES, SYSTEM_MAINTENANCE_MSG, waffle
 from openedx.core.djangoapps.user_api.errors import (
     AccountUpdateError,
     AccountValidationError,
-    PreferenceValidationError,
+    PreferenceValidationError
 )
 from openedx.core.djangoapps.user_api.preferences.api import update_user_preferences
 from openedx.core.lib.api.view_utils import add_serializer_errors
 from openedx.features.enterprise_support.utils import get_enterprise_readonly_account_fields
+from student import forms as student_forms
+from student import views as student_views
+from student.models import (
+    AccountRecovery,
+    Registration,
+    User,
+    UserProfile,
+    email_exists_or_retired,
+    username_exists_or_retired
+)
+from util.model_utils import emit_setting_changed_event
+from util.password_policy_validators import normalize_password, validate_password
 
 from .serializers import (
-    AccountLegacyProfileSerializer, AccountUserSerializer,
-    UserReadOnlySerializer, _visible_fields  # pylint: disable=invalid-name
+    AccountLegacyProfileSerializer,
+    AccountUserSerializer,
+    UserReadOnlySerializer,
+    _visible_fields
 )
 
 # Public access point for this function.
@@ -679,7 +680,7 @@ def _validate_username(username):
     """
     try:
         _validate_unicode(username)
-        _validate_type(username, basestring, accounts.USERNAME_BAD_TYPE_MSG)
+        _validate_type(username, six.string_types, accounts.USERNAME_BAD_TYPE_MSG)
         _validate_length(
             username,
             accounts.USERNAME_MIN_LENGTH,
@@ -711,7 +712,7 @@ def _validate_email(email):
     """
     try:
         _validate_unicode(email)
-        _validate_type(email, basestring, accounts.EMAIL_BAD_TYPE_MSG)
+        _validate_type(email, six.string_types, accounts.EMAIL_BAD_TYPE_MSG)
         _validate_length(email, accounts.EMAIL_MIN_LENGTH, accounts.EMAIL_MAX_LENGTH, accounts.EMAIL_BAD_LENGTH_MSG)
         validate_email.message = accounts.EMAIL_INVALID_MSG.format(email=email)
         validate_email(email)
@@ -753,7 +754,7 @@ def _validate_password(password, username=None, email=None):
 
     """
     try:
-        _validate_type(password, basestring, accounts.PASSWORD_BAD_TYPE_MSG)
+        _validate_type(password, six.string_types, accounts.PASSWORD_BAD_TYPE_MSG)
         temp_user = User(username=username, email=email) if username else None
         validate_password(password, user=temp_user)
     except errors.AccountDataBadType as invalid_password_err:
@@ -870,9 +871,9 @@ def _validate_unicode(data, err=u"Input not valid unicode"):
 
     """
     try:
-        if not isinstance(data, str) and not isinstance(data, unicode):
+        if not isinstance(data, str) and not isinstance(data, six.text_type):
             raise UnicodeError(err)
         # In some cases we pass the above, but it's still inappropriate utf-8.
-        unicode(data)
+        six.text_type(data)
     except UnicodeError:
         raise UnicodeError(err)
diff --git a/openedx/core/djangoapps/user_api/accounts/forms.py b/openedx/core/djangoapps/user_api/accounts/forms.py
index 418b98a291..ee0b908cf2 100644
--- a/openedx/core/djangoapps/user_api/accounts/forms.py
+++ b/openedx/core/djangoapps/user_api/accounts/forms.py
@@ -2,8 +2,11 @@
 Django forms for accounts
 """
 
+from __future__ import absolute_import
+
 from django import forms
 from django.core.exceptions import ValidationError
+
 from openedx.core.djangoapps.user_api.accounts.utils import generate_password
 
 
diff --git a/openedx/core/djangoapps/user_api/accounts/image_helpers.py b/openedx/core/djangoapps/user_api/accounts/image_helpers.py
index a1c46c46e5..cc56435ba9 100644
--- a/openedx/core/djangoapps/user_api/accounts/image_helpers.py
+++ b/openedx/core/djangoapps/user_api/accounts/image_helpers.py
@@ -1,21 +1,23 @@
 """
 Helper functions for the accounts API.
 """
+from __future__ import absolute_import
+
 import hashlib
 
 from django.conf import settings
+from django.contrib.staticfiles.storage import staticfiles_storage
 from django.core.exceptions import ObjectDoesNotExist
 from django.core.files.storage import get_storage_class
-from django.contrib.staticfiles.storage import staticfiles_storage
 
-from student.models import UserProfile
-from ..errors import UserNotFound
 from openedx.core.djangoapps.site_configuration import helpers as configuration_helpers
+from student.models import UserProfile
 
+from ..errors import UserNotFound
 
 PROFILE_IMAGE_FILE_EXTENSION = 'jpg'   # All processed profile images are converted to JPEGs
 
-_PROFILE_IMAGE_SIZES = settings.PROFILE_IMAGE_SIZES_MAP.values()
+_PROFILE_IMAGE_SIZES = list(settings.PROFILE_IMAGE_SIZES_MAP.values())
 
 
 def get_profile_image_storage():
diff --git a/openedx/core/djangoapps/user_api/accounts/permissions.py b/openedx/core/djangoapps/user_api/accounts/permissions.py
index 7b14ce00c6..5604b93b1f 100644
--- a/openedx/core/djangoapps/user_api/accounts/permissions.py
+++ b/openedx/core/djangoapps/user_api/accounts/permissions.py
@@ -1,7 +1,7 @@
 """
 Permissions classes for User accounts API views.
 """
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.conf import settings
 from rest_framework import permissions
diff --git a/openedx/core/djangoapps/user_api/accounts/serializers.py b/openedx/core/djangoapps/user_api/accounts/serializers.py
index 37e0321459..8e7f7e8099 100644
--- a/openedx/core/djangoapps/user_api/accounts/serializers.py
+++ b/openedx/core/djangoapps/user_api/accounts/serializers.py
@@ -1,34 +1,37 @@
 """
 Django REST Framework serializers for the User API Accounts sub-application
 """
+from __future__ import absolute_import
+
 import json
 import logging
 
-from rest_framework import serializers
-from django.contrib.auth.models import User
 from django.conf import settings
+from django.contrib.auth.models import User
 from django.core.exceptions import ObjectDoesNotExist
 from django.urls import reverse
+from rest_framework import serializers
 from six import text_type
 
 from lms.djangoapps.badges.utils import badges_enabled
 from openedx.core.djangoapps.site_configuration import helpers as configuration_helpers
 from openedx.core.djangoapps.user_api import errors
 from openedx.core.djangoapps.user_api.accounts.utils import is_secondary_email_feature_enabled_for_user
-from openedx.core.djangoapps.user_api.models import (
-    RetirementState,
-    UserPreference,
-    UserRetirementStatus
-)
+from openedx.core.djangoapps.user_api.models import RetirementState, UserPreference, UserRetirementStatus
 from openedx.core.djangoapps.user_api.serializers import ReadOnlyFieldsSerializerMixin
-from student.models import UserProfile, LanguageProficiency, SocialLink
+from student.models import LanguageProficiency, SocialLink, UserProfile
 
 from . import (
-    BIO_MAX_LENGTH, NAME_MIN_LENGTH, ACCOUNT_VISIBILITY_PREF_KEY, PRIVATE_VISIBILITY, CUSTOM_VISIBILITY,
-    ALL_USERS_VISIBILITY, VISIBILITY_PREFIX
+    ACCOUNT_VISIBILITY_PREF_KEY,
+    ALL_USERS_VISIBILITY,
+    BIO_MAX_LENGTH,
+    CUSTOM_VISIBILITY,
+    NAME_MIN_LENGTH,
+    PRIVATE_VISIBILITY,
+    VISIBILITY_PREFIX
 )
 from .image_helpers import get_profile_image_urls_for_user
-from .utils import validate_social_link, format_social_link
+from .utils import format_social_link, validate_social_link
 
 PROFILE_IMAGE_KEY_PREFIX = 'image_url'
 LOGGER = logging.getLogger(__name__)
diff --git a/openedx/core/djangoapps/user_api/accounts/settings_views.py b/openedx/core/djangoapps/user_api/accounts/settings_views.py
index 6bfae46d69..b3d94c8554 100644
--- a/openedx/core/djangoapps/user_api/accounts/settings_views.py
+++ b/openedx/core/djangoapps/user_api/accounts/settings_views.py
@@ -1,18 +1,22 @@
 """ Views related to Account Settings. """
 
-from datetime import datetime
+from __future__ import absolute_import
+
 import logging
+from datetime import datetime
+
+import six
 from django.conf import settings
 from django.contrib import messages
 from django.contrib.auth.decorators import login_required
 from django.shortcuts import redirect
-from django.utils.translation import ugettext as _
 from django.urls import reverse
+from django.utils.translation import ugettext as _
 from django.views.decorators.http import require_http_methods
 from django_countries import countries
 
+import third_party_auth
 from edxmako.shortcuts import render_to_response
-
 from lms.djangoapps.commerce.models import CommerceConfiguration
 from lms.djangoapps.commerce.utils import EcommerceService
 from openedx.core.djangoapps.commerce.utils import ecommerce_api_client
@@ -21,8 +25,8 @@ from openedx.core.djangoapps.lang_pref.api import all_languages, released_langua
 from openedx.core.djangoapps.programs.models import ProgramsApiConfig
 from openedx.core.djangoapps.site_configuration import helpers as configuration_helpers
 from openedx.core.djangoapps.user_api.accounts.toggles import (
-    should_redirect_to_order_history_microfrontend,
     should_redirect_to_account_microfrontend,
+    should_redirect_to_order_history_microfrontend
 )
 from openedx.core.djangoapps.user_api.preferences.api import get_user_preferences
 from openedx.core.lib.edx_api_utils import get_edx_api_data
@@ -30,11 +34,9 @@ from openedx.core.lib.time_zone_utils import TIME_ZONE_CHOICES
 from openedx.features.enterprise_support.api import get_enterprise_customer_for_learner
 from openedx.features.enterprise_support.utils import update_account_settings_context_for_enterprise
 from student.models import UserProfile
-import third_party_auth
 from third_party_auth import pipeline
 from util.date_utils import strftime_localized
 
-
 log = logging.getLogger(__name__)
 
 
@@ -75,7 +77,7 @@ def account_settings_context(request):
     """
     user = request.user
 
-    year_of_birth_options = [(unicode(year), unicode(year)) for year in UserProfile.VALID_YEARS]
+    year_of_birth_options = [(six.text_type(year), six.text_type(year)) for year in UserProfile.VALID_YEARS]
     try:
         user_orders = get_user_orders(user)
     except:  # pylint: disable=bare-except
diff --git a/openedx/core/djangoapps/user_api/accounts/signals.py b/openedx/core/djangoapps/user_api/accounts/signals.py
index 752f3dc00b..4c88b95069 100644
--- a/openedx/core/djangoapps/user_api/accounts/signals.py
+++ b/openedx/core/djangoapps/user_api/accounts/signals.py
@@ -2,6 +2,8 @@
 Django Signal related functionality for user_api accounts
 """
 
+from __future__ import absolute_import
+
 from django.dispatch import Signal
 
 # Signal to retire a user from LMS-initiated mailings (course mailings, etc)
diff --git a/openedx/core/djangoapps/user_api/accounts/tests/retirement_helpers.py b/openedx/core/djangoapps/user_api/accounts/tests/retirement_helpers.py
index 15d607df42..d54d3ec081 100644
--- a/openedx/core/djangoapps/user_api/accounts/tests/retirement_helpers.py
+++ b/openedx/core/djangoapps/user_api/accounts/tests/retirement_helpers.py
@@ -1,6 +1,8 @@
 """
 Helpers for testing retirement functionality
 """
+from __future__ import absolute_import
+
 import datetime
 
 import pytest
@@ -9,14 +11,8 @@ from django.test import TestCase
 from social_django.models import UserSocialAuth
 
 from enrollment import api
-from openedx.core.djangoapps.user_api.models import (
-    RetirementState,
-    UserRetirementStatus
-)
-from student.models import (
-    get_retired_username_by_username,
-    get_retired_email_by_email,
-)
+from openedx.core.djangoapps.user_api.models import RetirementState, UserRetirementStatus
+from student.models import get_retired_email_by_email, get_retired_username_by_username
 from student.tests.factories import UserFactory
 
 from ..views import AccountRetirementView
diff --git a/openedx/core/djangoapps/user_api/accounts/tests/test_api.py b/openedx/core/djangoapps/user_api/accounts/tests/test_api.py
index 9ea3f2e136..f52f5a1113 100644
--- a/openedx/core/djangoapps/user_api/accounts/tests/test_api.py
+++ b/openedx/core/djangoapps/user_api/accounts/tests/test_api.py
@@ -4,6 +4,8 @@ Unit tests for behavior that is specific to the api methods (vs. the view method
 Most of the functionality is covered in test_views.py.
 """
 
+from __future__ import absolute_import
+
 import itertools
 import re
 import unicodedata
@@ -41,11 +43,7 @@ from openedx.core.djangoapps.user_api.accounts.tests.testutils import (
     INVALID_USERNAMES,
     VALID_USERNAMES_UNICODE
 )
-from openedx.core.djangoapps.user_api.config.waffle import (
-    PREVENT_AUTH_USER_WRITES,
-    SYSTEM_MAINTENANCE_MSG,
-    waffle
-)
+from openedx.core.djangoapps.user_api.config.waffle import PREVENT_AUTH_USER_WRITES, SYSTEM_MAINTENANCE_MSG, waffle
 from openedx.core.djangoapps.user_api.errors import (
     AccountEmailInvalid,
     AccountPasswordInvalid,
diff --git a/openedx/core/djangoapps/user_api/accounts/tests/test_image_helpers.py b/openedx/core/djangoapps/user_api/accounts/tests/test_image_helpers.py
index c7a35da947..b2e04e16f1 100644
--- a/openedx/core/djangoapps/user_api/accounts/tests/test_image_helpers.py
+++ b/openedx/core/djangoapps/user_api/accounts/tests/test_image_helpers.py
@@ -1,15 +1,18 @@
 """
 Tests for helpers.py
 """
+from __future__ import absolute_import
+
 import datetime
 import hashlib
+
+from django.test import TestCase
 from mock import patch
 from pytz import UTC
 
-from django.test import TestCase
-
 from openedx.core.djangolib.testing.utils import skip_unless_lms
 from student.tests.factories import UserFactory
+
 from ..image_helpers import get_profile_image_urls_for_user
 
 TEST_SIZES = {'full': 50, 'small': 10}
diff --git a/openedx/core/djangoapps/user_api/accounts/tests/test_models.py b/openedx/core/djangoapps/user_api/accounts/tests/test_models.py
index e903ed0bd6..d7f4e29064 100644
--- a/openedx/core/djangoapps/user_api/accounts/tests/test_models.py
+++ b/openedx/core/djangoapps/user_api/accounts/tests/test_models.py
@@ -1,6 +1,8 @@
 """
 Model specific tests for user_api
 """
+from __future__ import absolute_import
+
 import pytest
 
 from openedx.core.djangoapps.user_api.models import (
@@ -11,8 +13,8 @@ from openedx.core.djangoapps.user_api.models import (
 )
 from student.models import get_retired_email_by_email, get_retired_username_by_username
 from student.tests.factories import UserFactory
-from .retirement_helpers import setup_retirement_states  # pylint: disable=unused-import
 
+from .retirement_helpers import setup_retirement_states  # pylint: disable=unused-import
 
 # Tell pytest it's ok to use the database
 pytestmark = pytest.mark.django_db
diff --git a/openedx/core/djangoapps/user_api/accounts/tests/test_permissions.py b/openedx/core/djangoapps/user_api/accounts/tests/test_permissions.py
index 94d46e9728..20bfd21a7f 100644
--- a/openedx/core/djangoapps/user_api/accounts/tests/test_permissions.py
+++ b/openedx/core/djangoapps/user_api/accounts/tests/test_permissions.py
@@ -1,7 +1,9 @@
 """
 Tests for User deactivation API permissions
 """
-from django.test import TestCase, RequestFactory
+from __future__ import absolute_import
+
+from django.test import RequestFactory, TestCase
 
 from openedx.core.djangoapps.user_api.accounts.permissions import CanDeactivateUser, CanRetireUser
 from student.tests.factories import ContentTypeFactory, PermissionFactory, SuperuserFactory, UserFactory
diff --git a/openedx/core/djangoapps/user_api/accounts/tests/test_retirement_views.py b/openedx/core/djangoapps/user_api/accounts/tests/test_retirement_views.py
index 11525d4589..0d3bfb6075 100644
--- a/openedx/core/djangoapps/user_api/accounts/tests/test_retirement_views.py
+++ b/openedx/core/djangoapps/user_api/accounts/tests/test_retirement_views.py
@@ -2,15 +2,15 @@
 """
 Test cases to cover account retirement views
 """
-from __future__ import print_function
+from __future__ import absolute_import, print_function
 
 import datetime
 import json
 import unittest
 
 import ddt
-import pytz
 import mock
+import pytz
 from consent.models import DataSharingConsent
 from django.conf import settings
 from django.contrib.auth.models import User
@@ -20,40 +20,42 @@ from django.core.cache import cache
 from django.core.urlresolvers import reverse
 from django.test import TestCase
 from enterprise.models import (
+    EnterpriseCourseEnrollment,
     EnterpriseCustomer,
     EnterpriseCustomerUser,
-    EnterpriseCourseEnrollment,
-    PendingEnterpriseCustomerUser,
-)
-from integrated_channels.sap_success_factors.models import (
-    SapSuccessFactorsLearnerDataTransmissionAudit
+    PendingEnterpriseCustomerUser
 )
+from integrated_channels.sap_success_factors.models import SapSuccessFactorsLearnerDataTransmissionAudit
 from opaque_keys.edx.keys import CourseKey
 from rest_framework import status
 from six import iteritems, text_type
+from six.moves import range
 from social_django.models import UserSocialAuth
-from wiki.models import ArticleRevision, Article
-from wiki.models.pluginbase import RevisionPluginRevision, RevisionPlugin
-from xmodule.modulestore.tests.factories import CourseFactory
-from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase
+from wiki.models import Article, ArticleRevision
+from wiki.models.pluginbase import RevisionPlugin, RevisionPluginRevision
 
 from entitlements.models import CourseEntitlementSupportDetail
 from entitlements.tests.factories import CourseEntitlementFactory
 from openedx.core.djangoapps.api_admin.models import ApiAccessRequest
-from openedx.core.djangoapps.credit.models import (
-    CreditRequirementStatus, CreditRequest, CreditCourse, CreditProvider, CreditRequirement
-)
 from openedx.core.djangoapps.course_groups.models import CourseUserGroup, UnregisteredLearnerCohortAssignments
+from openedx.core.djangoapps.credit.models import (
+    CreditCourse,
+    CreditProvider,
+    CreditRequest,
+    CreditRequirement,
+    CreditRequirementStatus
+)
 from openedx.core.djangoapps.oauth_dispatch.jwt import create_jwt_for_user
 from openedx.core.djangoapps.site_configuration.tests.factories import SiteFactory
+from openedx.core.djangoapps.user_api.accounts.views import AccountRetirementPartnerReportView
 from openedx.core.djangoapps.user_api.models import (
     RetirementState,
-    UserRetirementStatus,
+    UserOrgTag,
     UserRetirementPartnerReportingStatus,
-    UserOrgTag
+    UserRetirementStatus
 )
-from openedx.core.djangoapps.user_api.accounts.views import AccountRetirementPartnerReportView
 from student.models import (
+    AccountRecovery,
     CourseEnrollment,
     CourseEnrollmentAllowed,
     ManualEnrollmentAudit,
@@ -62,26 +64,27 @@ from student.models import (
     Registration,
     SocialLink,
     UserProfile,
-    get_retired_username_by_username,
     get_retired_email_by_email,
-    AccountRecovery,
+    get_retired_username_by_username
 )
 from student.tests.factories import (
+    AccountRecoveryFactory,
     ContentTypeFactory,
     CourseEnrollmentAllowedFactory,
     PendingEmailChangeFactory,
     PermissionFactory,
     SuperuserFactory,
-    UserFactory,
-    AccountRecoveryFactory,
+    UserFactory
 )
+from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase
+from xmodule.modulestore.tests.factories import CourseFactory
 
-from ..views import AccountRetirementView, USER_PROFILE_PII
 from ...tests.factories import UserOrgTagFactory
+from ..views import USER_PROFILE_PII, AccountRetirementView
 from .retirement_helpers import (  # pylint: disable=unused-import
     RetirementTestCase,
-    fake_completed_retirement,
     create_retirement_status,
+    fake_completed_retirement,
     setup_retirement_states
 )
 
diff --git a/openedx/core/djangoapps/user_api/accounts/tests/test_serializers.py b/openedx/core/djangoapps/user_api/accounts/tests/test_serializers.py
index 2f6f0755a8..6fd32565fc 100644
--- a/openedx/core/djangoapps/user_api/accounts/tests/test_serializers.py
+++ b/openedx/core/djangoapps/user_api/accounts/tests/test_serializers.py
@@ -1,16 +1,17 @@
 """
 Test cases to cover Accounts-related serializers of the User API application
 """
+from __future__ import absolute_import
+
 import logging
 
 from django.test import TestCase
 from django.test.client import RequestFactory
 from testfixtures import LogCapture
 
+from openedx.core.djangoapps.user_api.accounts.serializers import UserReadOnlySerializer
 from student.models import UserProfile
 from student.tests.factories import UserFactory
-from openedx.core.djangoapps.user_api.accounts.serializers import UserReadOnlySerializer
-
 
 LOGGER_NAME = "openedx.core.djangoapps.user_api.accounts.serializers"
 
diff --git a/openedx/core/djangoapps/user_api/accounts/tests/test_settings_views.py b/openedx/core/djangoapps/user_api/accounts/tests/test_settings_views.py
index ce10563a56..6ff1edf5a8 100644
--- a/openedx/core/djangoapps/user_api/accounts/tests/test_settings_views.py
+++ b/openedx/core/djangoapps/user_api/accounts/tests/test_settings_views.py
@@ -1,28 +1,30 @@
 """ Tests for views related to account settings. """
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
+
 import mock
 from django.conf import settings
 from django.contrib import messages
 from django.contrib.messages.middleware import MessageMiddleware
-from django.urls import reverse
 from django.http import HttpRequest
 from django.test import TestCase
 from django.test.utils import override_settings
+from django.urls import reverse
 from edx_rest_api_client import exceptions
 
 from lms.djangoapps.commerce.models import CommerceConfiguration
 from lms.djangoapps.commerce.tests import factories
 from lms.djangoapps.commerce.tests.mocks import mock_get_orders
-from openedx.core.djangoapps.user_api.accounts.toggles import REDIRECT_TO_ACCOUNT_MICROFRONTEND
 from openedx.core.djangoapps.dark_lang.models import DarkLangConfig
 from openedx.core.djangoapps.lang_pref.tests.test_api import EN, LT_LT
 from openedx.core.djangoapps.programs.tests.mixins import ProgramsApiConfigMixin
 from openedx.core.djangoapps.site_configuration.tests.factories import SiteFactory
 from openedx.core.djangoapps.site_configuration.tests.mixins import SiteMixin
-from openedx.core.djangoapps.user_api.tests.factories import UserPreferenceFactory
-from openedx.core.djangolib.testing.utils import skip_unless_lms
 from openedx.core.djangoapps.user_api.accounts.settings_views import account_settings_context, get_user_orders
+from openedx.core.djangoapps.user_api.accounts.toggles import REDIRECT_TO_ACCOUNT_MICROFRONTEND
+from openedx.core.djangoapps.user_api.tests.factories import UserPreferenceFactory
 from openedx.core.djangoapps.waffle_utils.testutils import override_waffle_flag
+from openedx.core.djangolib.testing.utils import skip_unless_lms
 from student.tests.factories import UserFactory
 from third_party_auth.tests.testutil import ThirdPartyAuthTestMixin
 
diff --git a/openedx/core/djangoapps/user_api/accounts/tests/test_utils.py b/openedx/core/djangoapps/user_api/accounts/tests/test_utils.py
index 6c2e66c047..b492c015b1 100644
--- a/openedx/core/djangoapps/user_api/accounts/tests/test_utils.py
+++ b/openedx/core/djangoapps/user_api/accounts/tests/test_utils.py
@@ -3,11 +3,11 @@
 from __future__ import absolute_import, division, print_function, unicode_literals
 
 import ddt
+from completion import models
+from completion.test_utils import CompletionWaffleTestMixin
 from django.test import TestCase
 from django.test.utils import override_settings
 
-from completion import models
-from completion.test_utils import CompletionWaffleTestMixin
 from openedx.core.djangoapps.user_api.accounts.utils import retrieve_last_sitewide_block_completed
 from openedx.core.djangolib.testing.utils import skip_unless_lms
 from student.models import CourseEnrollment
@@ -15,7 +15,7 @@ from student.tests.factories import UserFactory
 from xmodule.modulestore.tests.django_utils import SharedModuleStoreTestCase
 from xmodule.modulestore.tests.factories import CourseFactory, ItemFactory
 
-from ..utils import format_social_link, validate_social_link, generate_password
+from ..utils import format_social_link, generate_password, validate_social_link
 
 
 @ddt.ddt
diff --git a/openedx/core/djangoapps/user_api/accounts/tests/test_views.py b/openedx/core/djangoapps/user_api/accounts/tests/test_views.py
index f74cf3e427..11ed483431 100644
--- a/openedx/core/djangoapps/user_api/accounts/tests/test_views.py
+++ b/openedx/core/djangoapps/user_api/accounts/tests/test_views.py
@@ -2,20 +2,22 @@
 """
 Test cases to cover Accounts-related behaviors of the User API application
 """
-from copy import deepcopy
+from __future__ import absolute_import
+
 import datetime
 import hashlib
 import json
+from copy import deepcopy
 
 import ddt
+import mock
+import pytz
 from django.conf import settings
 from django.core.urlresolvers import reverse
 from django.test.testcases import TransactionTestCase
 from django.test.utils import override_settings
-
-import mock
-import pytz
 from rest_framework.test import APIClient, APITestCase
+from six.moves import range
 
 from openedx.core.djangoapps.oauth_dispatch.jwt import create_jwt_for_user
 from openedx.core.djangoapps.user_api.accounts import ACCOUNT_VISIBILITY_PREF_KEY
@@ -25,8 +27,7 @@ from openedx.core.djangolib.testing.utils import CacheIsolationTestCase, skip_un
 from student.models import PendingEmailChange, UserProfile
 from student.tests.factories import TEST_PASSWORD, UserFactory
 
-from .. import ALL_USERS_VISIBILITY, PRIVATE_VISIBILITY, CUSTOM_VISIBILITY
-
+from .. import ALL_USERS_VISIBILITY, CUSTOM_VISIBILITY, PRIVATE_VISIBILITY
 
 TEST_PROFILE_IMAGE_UPLOADED_AT = datetime.datetime(2002, 1, 9, 15, 43, 1, tzinfo=pytz.UTC)
 
@@ -622,7 +623,8 @@ class TestAccountsAPI(CacheIsolationTestCase, UserAPITestCase):
                 "This field is not editable via this API", data["field_errors"][field_name]["developer_message"]
             )
             self.assertEqual(
-                u"The '{0}' field cannot be edited.".format(field_name), data["field_errors"][field_name]["user_message"]
+                u"The '{0}' field cannot be edited.".format(field_name),
+                data["field_errors"][field_name]["user_message"]
             )
 
         for field_name in ["username", "date_joined", "is_active", "profile_image", "requires_parental_consent"]:
diff --git a/openedx/core/djangoapps/user_api/accounts/tests/testutils.py b/openedx/core/djangoapps/user_api/accounts/tests/testutils.py
index 37d1c47efc..07250584c1 100644
--- a/openedx/core/djangoapps/user_api/accounts/tests/testutils.py
+++ b/openedx/core/djangoapps/user_api/accounts/tests/testutils.py
@@ -3,12 +3,10 @@
 Utility functions, constants, etc. for testing.
 """
 
-from openedx.core.djangoapps.user_api.accounts import (
-    USERNAME_MIN_LENGTH, USERNAME_MAX_LENGTH,
-    EMAIL_MAX_LENGTH,
-)
-from util.password_policy_validators import DEFAULT_MAX_PASSWORD_LENGTH
+from __future__ import absolute_import
 
+from openedx.core.djangoapps.user_api.accounts import EMAIL_MAX_LENGTH, USERNAME_MAX_LENGTH, USERNAME_MIN_LENGTH
+from util.password_policy_validators import DEFAULT_MAX_PASSWORD_LENGTH
 
 INVALID_NAMES = [
     None,
diff --git a/openedx/core/djangoapps/user_api/accounts/toggles.py b/openedx/core/djangoapps/user_api/accounts/toggles.py
index 32f7b453b5..6d2d7a3120 100644
--- a/openedx/core/djangoapps/user_api/accounts/toggles.py
+++ b/openedx/core/djangoapps/user_api/accounts/toggles.py
@@ -1,10 +1,11 @@
 """
 Toggles for accounts related code.
 """
+from __future__ import absolute_import
+
 from openedx.core.djangoapps.site_configuration import helpers as configuration_helpers
 from openedx.core.djangoapps.waffle_utils import WaffleFlag
 
-
 # .. toggle_name: REDIRECT_TO_ORDER_HISTORY_MICROFRONTEND
 # .. toggle_type: waffle_flag
 # .. toggle_default: False
diff --git a/openedx/core/djangoapps/user_api/accounts/utils.py b/openedx/core/djangoapps/user_api/accounts/utils.py
index a2e18f0aef..314896f840 100644
--- a/openedx/core/djangoapps/user_api/accounts/utils.py
+++ b/openedx/core/djangoapps/user_api/accounts/utils.py
@@ -1,20 +1,21 @@
 """
 Utility methods for the account settings.
 """
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 import random
 import re
 import string
-from urlparse import urlparse
 
 import waffle
+from completion import waffle as completion_waffle
+from completion.models import BlockCompletion
 from django.conf import settings
 from django.utils.translation import ugettext as _
 from six import text_type
+from six.moves import range
+from six.moves.urllib.parse import urlparse  # pylint: disable=import-error
 
-from completion import waffle as completion_waffle
-from completion.models import BlockCompletion
 from openedx.core.djangoapps.site_configuration.models import SiteConfiguration
 from openedx.core.djangoapps.theming.helpers import get_config_value_from_site_or_settings, get_current_site
 from xmodule.modulestore.django import modulestore
@@ -37,10 +38,9 @@ def validate_social_link(platform_name, new_social_link):
     # Ensure that the new link is valid.
     if formatted_social_link is None:
         required_url_stub = settings.SOCIAL_PLATFORMS[platform_name]['url_stub']
-        raise ValueError(_(
-            ' Make sure that you are providing a valid username or a URL that contains "' +
-            required_url_stub + '". To remove the link from your edX profile, leave this field blank.'
-        ))
+        raise ValueError(_('Make sure that you are providing a valid username or a URL that contains "{url_stub}". '
+                           'To remove the link from your edX profile, '
+                           'leave this field blank.').format(url_stub=required_url_stub))
 
 
 def format_social_link(platform_name, new_social_link):
@@ -190,7 +190,7 @@ def generate_password(length=12, chars=string.letters + string.digits):
     password = ''
     password += choice(string.digits)
     password += choice(string.letters)
-    password += ''.join([choice(chars) for _i in xrange(length - 2)])
+    password += ''.join([choice(chars) for _i in range(length - 2)])
     return password
 
 
diff --git a/openedx/core/djangoapps/user_api/accounts/views.py b/openedx/core/djangoapps/user_api/accounts/views.py
index d0b547ccf5..ee76f70cbd 100644
--- a/openedx/core/djangoapps/user_api/accounts/views.py
+++ b/openedx/core/djangoapps/user_api/accounts/views.py
@@ -4,10 +4,12 @@ An API for retrieving user account information.
 For additional information and historical context, see:
 https://openedx.atlassian.net/wiki/display/TNL/User+API
 """
+from __future__ import absolute_import
+
 import datetime
 import logging
-from functools import wraps
 import uuid
+from functools import wraps
 
 import pytz
 from consent.models import DataSharingConsent
@@ -38,25 +40,25 @@ from wiki.models import ArticleRevision
 from wiki.models.pluginbase import RevisionPluginRevision
 
 from entitlements.models import CourseEntitlement
-from openedx.core.djangoapps.user_authn.exceptions import AuthFailedError
 from openedx.core.djangoapps.ace_common.template_context import get_base_template_context
 from openedx.core.djangoapps.api_admin.models import ApiAccessRequest
-from openedx.core.djangoapps.credit.models import CreditRequirementStatus, CreditRequest
 from openedx.core.djangoapps.course_groups.models import UnregisteredLearnerCohortAssignments
+from openedx.core.djangoapps.credit.models import CreditRequest, CreditRequirementStatus
 from openedx.core.djangoapps.lang_pref import LANGUAGE_KEY
 from openedx.core.djangoapps.profile_images.images import remove_profile_images
 from openedx.core.djangoapps.user_api.accounts.image_helpers import get_profile_image_names, set_has_profile_image
-from openedx.core.djangolib.oauth2_retirement_utils import retire_dot_oauth2_models, retire_dop_oauth2_models
+from openedx.core.djangoapps.user_authn.exceptions import AuthFailedError
+from openedx.core.djangolib.oauth2_retirement_utils import retire_dop_oauth2_models, retire_dot_oauth2_models
 from openedx.core.lib.api.authentication import OAuth2AuthenticationAllowInactiveUser
 from openedx.core.lib.api.parsers import MergePatchParser
 from student.models import (
     AccountRecovery,
     CourseEnrollment,
-    ManualEnrollmentAudit,
-    PendingNameChange,
     CourseEnrollmentAllowed,
     LoginFailures,
+    ManualEnrollmentAudit,
     PendingEmailChange,
+    PendingNameChange,
     Registration,
     User,
     UserProfile,
@@ -65,7 +67,9 @@ from student.models import (
     get_retired_username_by_username,
     is_username_retired
 )
+
 from ..errors import AccountUpdateError, AccountValidationError, UserNotAuthorized, UserNotFound
+from ..message_types import DeletionNotificationMessage
 from ..models import (
     RetirementState,
     RetirementStateError,
@@ -76,12 +80,7 @@ from ..models import (
 from .api import get_account_settings, update_account_settings
 from .permissions import CanDeactivateUser, CanReplaceUsername, CanRetireUser
 from .serializers import UserRetirementPartnerReportSerializer, UserRetirementStatusSerializer
-from .signals import (
-    USER_RETIRE_LMS_CRITICAL,
-    USER_RETIRE_LMS_MISC,
-    USER_RETIRE_MAILINGS,
-)
-from ..message_types import DeletionNotificationMessage
+from .signals import USER_RETIRE_LMS_CRITICAL, USER_RETIRE_LMS_MISC, USER_RETIRE_MAILINGS
 
 log = logging.getLogger(__name__)
 
@@ -681,7 +680,8 @@ class AccountRetirementStatusView(ViewSet):
         except ValueError:
             return Response('Invalid cool_off_days, should be integer.', status=status.HTTP_400_BAD_REQUEST)
         except KeyError as exc:
-            return Response(u'Missing required parameter: {}'.format(text_type(exc)), status=status.HTTP_400_BAD_REQUEST)
+            return Response(u'Missing required parameter: {}'.format(text_type(exc)),
+                            status=status.HTTP_400_BAD_REQUEST)
         except RetirementStateError as exc:
             return Response(text_type(exc), status=status.HTTP_400_BAD_REQUEST)
 
@@ -722,7 +722,8 @@ class AccountRetirementStatusView(ViewSet):
         except ValueError as exc:
             return Response(u'Invalid start or end date: {}'.format(text_type(exc)), status=status.HTTP_400_BAD_REQUEST)
         except KeyError as exc:
-            return Response(u'Missing required parameter: {}'.format(text_type(exc)), status=status.HTTP_400_BAD_REQUEST)
+            return Response(u'Missing required parameter: {}'.format(text_type(exc)),
+                            status=status.HTTP_400_BAD_REQUEST)
         except RetirementState.DoesNotExist:
             return Response('Unknown retirement state.', status=status.HTTP_400_BAD_REQUEST)
         except RetirementStateError as exc: