fix spacing

letsencrypt/client/auth_handler.py

@@ -233,7 +233,6 @@ class AuthHandler(object):  # pylint: disable=too-many-instance-attributes
         if client_list:
             self.client_auth.cleanup(client_list)
 
-
     def _cleanup_state(self, delete_list):
         """Cleanup state after an authorization is received.
 

letsencrypt/client/display/ops.py

@@ -42,6 +42,7 @@ def choose_authenticator(auths, errs):
         else:
             return
 
+
 def choose_names(installer):
     """Display screen to select domains to validate.
 

letsencrypt/client/tests/display/revocation_test.py

@@ -98,5 +98,6 @@ class ConfirmRevocationTest(unittest.TestCase):
         mock_util().yesno.return_value = False
         self.assertFalse(self._call(self.cert))
 
+
 if __name__ == "__main__":
     unittest.main()

letsencrypt/client/tests/display/util_test.py

@@ -53,7 +53,6 @@ class NcursesDisplayTest(DisplayT):
             "menu_height": display_util.HEIGHT-6,
         }
 
-
     @mock.patch("letsencrypt.client.display.util.dialog.Dialog.msgbox")
     def test_notification(self, mock_msgbox):
         """Kind of worthless... one liner."""