Opaque-keys: fix pep8 violations

common/djangoapps/course_groups/cohorts.py

@@ -32,6 +32,7 @@ def local_random():
 
     return _local_random
 
+
 def is_course_cohorted(course_key):
     """
     Given a course key, return a boolean for whether or not the course is

common/djangoapps/student/tests/test_roles.py

@@ -132,7 +132,6 @@ class RolesTestCase(TestCase):
             "Student doesn't have access to {}".format(unicode(self.course_id))
         )
 
-
     def test_get_user_for_role(self):
         """
         test users_for_role

common/lib/xmodule/xmodule/modulestore/locator.py

@@ -94,7 +94,6 @@ class BlockLocatorBase(Locator):
 
     URL_RE = re.compile('^' + URL_RE_SOURCE + '$', re.IGNORECASE | re.VERBOSE | re.UNICODE)
 
-
     @classmethod
     def parse_url(cls, string):
         """

lms/djangoapps/bulk_email/tasks.py

@@ -192,7 +192,6 @@ def perform_delegate_email_batches(entry_id, course_id, task_input, action_name)
         log.warning(u"Task %s: " + format_msg, task_id, course_id, email_obj.course_id)
         raise ValueError(format_msg % (course_id, email_obj.course_id))
 
-
     # Fetch the course object.
     course = get_course(course_id)