Fix formatting & comments in go/management

go/go/management/commands/expirelinks.py

 """
 go/commands/expirelinks.py
-"""
 
+Remove expired links from the database.
+"""
 # Future Imports
 from __future__ import (absolute_import, division, print_function,
                         unicode_literals)
@@ -16,20 +17,15 @@ from go.models import URL
 class Command(BaseCommand):
     """
     Define a new custom django-admin command to remove expired links from the
-    database
+    database.
     """
-
-    # Define help text for this command
     help = 'Removes expired links from the database'
 
     def handle(self, *args, **options):
         """
-        The handle function handles the main component of the django-admin 
-        command.
+        Handle the main component of the django-admin command. Loop
+        through a list of all URL objects that have expired (expires field is
+        less than or equal [lte] to today's date)
         """
-
-        # Loop through a list of all URL objects that have expired
-        # (expires field is less than or equal to today's date)
-        for toexpire in URL.objects.filter(expires__lte=timezone.now()):
-            # Delete the current URL
-            toexpire.delete()
+        for expired_url in URL.objects.filter(expires__lte=timezone.now()):
+            expired_url.delete()

go/go/management/commands/test_expirelinks.py

 """
 go/commands/test_expirelinks.py
-"""
 
+Test that the function to expire Go links actually works.
+"""
 # Future Imports
 from __future__ import (absolute_import, division, print_function,
                         unicode_literals)
@@ -19,16 +20,11 @@ from django.utils import timezone
 from go.models import URL, RegisteredUser
 
 class ExpireLinksTest(TestCase):
-    """
-    Test cases for the functions in expirelinks
-    """
-
     def setUp(self):
         """
-        Set up any variables such as dummy objects that will be utilised in
+        Set up any variables such as dummy objects that will be utilized in
         testing methods
         """
-
         # Setup a blank URL object with an owner
         User.objects.create(username='dhaynes', password='password')
         get_user = User.objects.get(username='dhaynes')
@@ -52,9 +48,8 @@ class ExpireLinksTest(TestCase):
 
     def test_expirelinks(self):
         """
-        Test that the expirelinks django admin command functions as intentioned.
+        Make a call to expire Go links and assert that the number of links has
+        been reduced.
         """
-
         call_command('expirelinks')
-
         self.assertTrue(len(URL.objects.all()) == 1)