Conformed to PEP-8.

functional_tests.py

 from selenium import webdriver
 import unittest
 
-from selenium import webdriver
-
 
 class NewVisitorTest(unittest.TestCase):
+
     def setUp(self):
         self.browser = webdriver.Firefox()
 

heroes/tests.py

 from django.test import TestCase
 
 class HomePageTest(TestCase):
+
     def test_heroes_page_returns_correct_html(self):
         response = self.client.get('/heroes/')
         self.assertTemplateUsed(response, 'heroes.html')

heroes/urls.py

@@ -3,8 +3,8 @@ from django.conf.urls import url
 from .views import heroes_page, cloud_page, sunflowey_page, jester_page
 
 urlpatterns = [
-	url(r'^heroes/$', heroes_page, name='heroes_page'),
-	url(r'^hero/cloud$', cloud_page, name='cloud_page'),
-	url(r'^hero/sunflowey$', sunflowey_page, name='cloud_page'),
-	url(r'^hero/jester$', jester_page, name='cloud_page'),
+    url(r'^heroes/$', heroes_page, name='heroes_page'),
+    url(r'^hero/cloud$', cloud_page, name='cloud_page'),
+    url(r'^hero/sunflowey$', sunflowey_page, name='cloud_page'),
+    url(r'^hero/jester$', jester_page, name='cloud_page'),
 ]