diff --git a/common/djangoapps/student/models.py b/common/djangoapps/student/models.py
index 7d23d033df..2a3a678dd7 100644
--- a/common/djangoapps/student/models.py
+++ b/common/djangoapps/student/models.py
@@ -972,6 +972,8 @@ class PendingSecondaryEmailChange(DeletableByUserValue, models.Model):
 EVENT_NAME_ENROLLMENT_ACTIVATED = 'edx.course.enrollment.activated'
 EVENT_NAME_ENROLLMENT_DEACTIVATED = 'edx.course.enrollment.deactivated'
 EVENT_NAME_ENROLLMENT_MODE_CHANGED = 'edx.course.enrollment.mode_changed'
+
+
 class LoginFailures(models.Model):
     """
     This model will keep track of failed login attempts.
@@ -1198,6 +1200,8 @@ class CourseEnrollmentManager(models.Manager):
 # CourseEnrollment for a user in a course.  This type
 # is used to cache the state in the request cache.
 CourseEnrollmentState = namedtuple('CourseEnrollmentState', 'mode, is_active')
+
+
 class CourseEnrollment(models.Model):
     """
     Represents a Student's Enrollment record for a single Course. You should
diff --git a/lms/djangoapps/badges/models.py b/lms/djangoapps/badges/models.py
index c0c94d00d0..3a4c700f5b 100644
--- a/lms/djangoapps/badges/models.py
+++ b/lms/djangoapps/badges/models.py
@@ -180,6 +180,8 @@ class BadgeAssertion(TimeStampedModel):
 
 # Abstract model doesn't index this, so we have to.
 BadgeAssertion._meta.get_field('created').db_index = True
+
+
 class CourseCompleteImageConfiguration(models.Model):
     """
     Contains the icon configuration for badges for a specific course mode.
diff --git a/lms/djangoapps/bulk_email/models.py b/lms/djangoapps/bulk_email/models.py
index 42b118469d..283417252d 100644
--- a/lms/djangoapps/bulk_email/models.py
+++ b/lms/djangoapps/bulk_email/models.py
@@ -56,6 +56,8 @@ EMAIL_TARGET_CHOICES = list(zip(
     ['Myself', 'Staff and instructors', 'All students', 'Specific cohort', 'Specific course mode']
 ))
 EMAIL_TARGETS = {target[0] for target in EMAIL_TARGET_CHOICES}
+
+
 class Target(models.Model):
     """
     A way to refer to a particular group (within a course) as a "Send to:" target.