diff --git a/lms/djangoapps/grades/management/commands/recalculate_subsection_grades.py b/lms/djangoapps/grades/management/commands/recalculate_subsection_grades.py
index d06cb68f95..993e80b742 100644
--- a/lms/djangoapps/grades/management/commands/recalculate_subsection_grades.py
+++ b/lms/djangoapps/grades/management/commands/recalculate_subsection_grades.py
@@ -8,15 +8,16 @@ from __future__ import absolute_import, division, print_function, unicode_litera
 import logging
 from datetime import datetime
 
+import six
 from django.core.management.base import BaseCommand, CommandError
 from pytz import utc
+from submissions.models import Submission
 
 from courseware.models import StudentModule
 from lms.djangoapps.grades.constants import ScoreDatabaseTableEnum
 from lms.djangoapps.grades.events import PROBLEM_SUBMITTED_EVENT_TYPE
 from lms.djangoapps.grades.tasks import recalculate_subsection_grade_v3
 from student.models import user_by_anonymous_id
-from submissions.models import Submission
 from track.event_transaction_utils import create_new_event_transaction_id, set_event_transaction_type
 from util.date_utils import to_timestamp
 
@@ -64,12 +65,12 @@ class Command(BaseCommand):
         for record in StudentModule.objects.filter(**kwargs):
             task_args = {
                 "user_id": record.student_id,
-                "course_id": unicode(record.course_id),
-                "usage_id": unicode(record.module_state_key),
+                "course_id": six.text_type(record.course_id),
+                "usage_id": six.text_type(record.module_state_key),
                 "only_if_higher": False,
                 "expected_modified_time": to_timestamp(record.modified),
                 "score_deleted": False,
-                "event_transaction_id": unicode(event_transaction_id),
+                "event_transaction_id": six.text_type(event_transaction_id),
                 "event_transaction_type": PROBLEM_SUBMITTED_EVENT_TYPE,
                 "score_db_table": ScoreDatabaseTableEnum.courseware_student_module,
             }
@@ -80,12 +81,12 @@ class Command(BaseCommand):
             task_args = {
                 "user_id": user_by_anonymous_id(record.student_item.student_id).id,
                 "anonymous_user_id": record.student_item.student_id,
-                "course_id": unicode(record.student_item.course_id),
-                "usage_id": unicode(record.student_item.item_id),
+                "course_id": six.text_type(record.student_item.course_id),
+                "usage_id": six.text_type(record.student_item.item_id),
                 "only_if_higher": False,
                 "expected_modified_time": to_timestamp(record.created_at),
                 "score_deleted": False,
-                "event_transaction_id": unicode(event_transaction_id),
+                "event_transaction_id": six.text_type(event_transaction_id),
                 "event_transaction_type": PROBLEM_SUBMITTED_EVENT_TYPE,
                 "score_db_table": ScoreDatabaseTableEnum.submissions,
             }
diff --git a/lms/djangoapps/grades/management/commands/tests/test_compute_grades.py b/lms/djangoapps/grades/management/commands/tests/test_compute_grades.py
index 13830d76ee..7c057fbe31 100644
--- a/lms/djangoapps/grades/management/commands/tests/test_compute_grades.py
+++ b/lms/djangoapps/grades/management/commands/tests/test_compute_grades.py
@@ -8,6 +8,7 @@ from __future__ import absolute_import, division, print_function, unicode_litera
 
 import ddt
 import six
+from six.moves import range
 from django.contrib.auth import get_user_model
 from django.core.management import CommandError, call_command
 from mock import ANY, patch
diff --git a/lms/djangoapps/grades/management/commands/tests/test_recalculate_learner_grades.py b/lms/djangoapps/grades/management/commands/tests/test_recalculate_learner_grades.py
index fed3b499a7..bd00400cdb 100644
--- a/lms/djangoapps/grades/management/commands/tests/test_recalculate_learner_grades.py
+++ b/lms/djangoapps/grades/management/commands/tests/test_recalculate_learner_grades.py
@@ -2,15 +2,17 @@
 Tests for recalculate_learner_grades management command.
 """
 
+from __future__ import absolute_import
+
 from tempfile import NamedTemporaryFile
 
 import mock
 
 from lms.djangoapps.grades.management.commands import recalculate_learner_grades
 from lms.djangoapps.grades.tests.test_tasks import HasCourseWithProblemsMixin
+from student.tests.factories import CourseEnrollmentFactory, UserFactory
 from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase
 from xmodule.modulestore.tests.factories import CourseFactory
-from student.tests.factories import UserFactory, CourseEnrollmentFactory
 
 DATE_FORMAT = u"%Y-%m-%d %H:%M"
 
diff --git a/lms/djangoapps/grades/management/commands/tests/test_recalculate_subsection_grades.py b/lms/djangoapps/grades/management/commands/tests/test_recalculate_subsection_grades.py
index b427a008b4..b06134aee5 100644
--- a/lms/djangoapps/grades/management/commands/tests/test_recalculate_subsection_grades.py
+++ b/lms/djangoapps/grades/management/commands/tests/test_recalculate_subsection_grades.py
@@ -2,9 +2,12 @@
 Tests for reset_grades management command.
 """
 
+from __future__ import absolute_import
+
 from datetime import datetime
 
 import ddt
+import six
 from django.conf import settings
 from mock import MagicMock, patch
 from pytz import utc
@@ -69,7 +72,7 @@ class TestRecalculateSubsectionGrades(HasCourseWithProblemsMixin, ModuleStoreTes
             "only_if_higher": False,
             "expected_modified_time": to_timestamp(utc.localize(datetime.strptime('2016-08-23 16:43', DATE_FORMAT))),
             "score_deleted": False,
-            "event_transaction_id": unicode(get_event_transaction_id()),
+            "event_transaction_id": six.text_type(get_event_transaction_id()),
             "event_transaction_type": u'edx.grades.problem.submitted',
             "score_db_table": score_db_table,
         }