Django3 has removed python_2_unicode_compatible.

Execute the codemodes on this file and removed all usage.

cms/djangoapps/course_creators/models.py

@@ -19,6 +19,8 @@ send_admin_notification = Signal(providing_args=["user"])
 
 # A signal that will be sent when user should be notified of change in course creator privileges
 send_user_notification = Signal(providing_args=["user", "state"])
+
+
 class CourseCreator(models.Model):
     """
     Creates the database table model.

cms/lib/xblock/tagging/models.py

@@ -5,6 +5,7 @@ Django Model for tags
 
 from django.db import models
 
+
 class TagCategories(models.Model):
     """
     This model represents tag categories.

openedx/core/djangoapps/api_admin/models.py

@@ -24,6 +24,8 @@ from common.djangoapps.edxmako.shortcuts import render_to_string
 from openedx.core.djangoapps.site_configuration import helpers as configuration_helpers
 
 log = logging.getLogger(__name__)
+
+
 class ApiAccessRequest(TimeStampedModel):
     """
     Model to track API access for a user.