Fix pep8 violations.

problem_builder/tests/integration/test_student_answers_dashboard.py

@@ -56,7 +56,6 @@ class StudentAnswersDashboardTest(SeleniumXBlockTest):
         data_export = self.go_to_view()
         self.assertIn('This interface can only be used by course staff.', data_export.text)
 
-
     @patch.dict('sys.modules', {
         'problem_builder.tasks': MockTasksModule(successful=True),
         'instructor_task': True,
@@ -95,7 +94,6 @@ class StudentAnswersDashboardTest(SeleniumXBlockTest):
         self.assertIn('Results retrieved on', info_area.text)
         self.assertEqual('', status_area.text)
 
-
     @patch.dict('sys.modules', {
         'problem_builder.tasks': MockTasksModule(successful=False),
         'instructor_task': True,
@@ -128,7 +126,6 @@ class StudentAnswersDashboardTest(SeleniumXBlockTest):
         self.assertEqual('', info_area.text)
         self.assertIn('Data export failed. Reason:', status_area.text)
 
-
     @patch.dict('sys.modules', {
         'problem_builder.tasks': MockTasksModule(successful=True),
         'instructor_task': True,
@@ -158,7 +155,6 @@ class StudentAnswersDashboardTest(SeleniumXBlockTest):
         self.assertEqual('0', current_page_info.text)
         self.assertEqual('0', total_pages_info.text)
 
-
     @patch.dict('sys.modules', {
         'problem_builder.tasks': MockTasksModule(
             successful=True, display_data=[[
@@ -198,7 +194,6 @@ class StudentAnswersDashboardTest(SeleniumXBlockTest):
         self.assertEqual('1', current_page_info.text)
         self.assertEqual('1', total_pages_info.text)
 
-
     @patch.dict('sys.modules', {
         'problem_builder.tasks': MockTasksModule(
             successful=True, display_data=[[
@@ -303,7 +298,6 @@ class StudentAnswersDashboardTest(SeleniumXBlockTest):
 
         self.assertEqual('1', current_page_info.text)
 
-
     def test_non_staff_disabled(self):
         student_answers_dashboard = self.go_to_view()
         self.assertRaises(