diff --git a/patchwork/models.py b/patchwork/models.py
index 9a619bc5..4e5afc4b 100644
--- a/patchwork/models.py
+++ b/patchwork/models.py
@@ -1059,7 +1059,6 @@ def __str__(self):
 
 
 class Check(models.Model):
-
     """Check for a patch.
 
     Checks store the results of any tests executed (or executing) for a
diff --git a/patchwork/tests/test_notifications.py b/patchwork/tests/test_notifications.py
index 70d25da3..b56c8ccb 100644
--- a/patchwork/tests/test_notifications.py
+++ b/patchwork/tests/test_notifications.py
@@ -20,7 +20,6 @@
 
 
 class PatchNotificationModelTest(TestCase):
-
     """Tests for the creation and update of the PatchChangeNotifications."""
 
     def setUp(self):
diff --git a/patchwork/tests/views/test_api.py b/patchwork/tests/views/test_api.py
index b14d402b..4b6accdb 100644
--- a/patchwork/tests/views/test_api.py
+++ b/patchwork/tests/views/test_api.py
@@ -12,7 +12,6 @@
 
 
 class SubmitterCompletionTest(TestCase):
-
     """Validate the 'submitter' autocomplete endpoint."""
 
     def test_name_complete(self):
diff --git a/patchwork/tests/views/test_bundles.py b/patchwork/tests/views/test_bundles.py
index e5ac1efa..517b4439 100644
--- a/patchwork/tests/views/test_bundles.py
+++ b/patchwork/tests/views/test_bundles.py
@@ -222,7 +222,6 @@ def setUp(self):
 
 
 class BundlePublicModifyTest(BundleTestBase):
-
     """Ensure that non-owners can't modify bundles"""
 
     def setUp(self):
@@ -275,7 +274,6 @@ def test_bundle_form_submission(self):
 
 
 class BundlePrivateViewTest(BundleTestBase):
-
     """Ensure that non-owners can't view private bundles"""
 
     def setUp(self):
@@ -306,7 +304,6 @@ def test_private_bundle(self):
 
 @override_settings(ENABLE_REST_API=True)
 class BundlePrivateViewMboxTest(BundlePrivateViewTest):
-
     """Ensure that non-owners can't view private bundle mboxes"""
 
     def setUp(self):
@@ -704,7 +701,6 @@ def test_add_to_non_empty_bundle(self):
 
 
 class BundleInitialOrderTest(BundleTestBase):
-
     """When creating bundles from a patch list, ensure that the patches in the
     bundle are ordered by date"""
 
diff --git a/patchwork/tests/views/test_mail.py b/patchwork/tests/views/test_mail.py
index ae0b2c38..798b83f4 100644
--- a/patchwork/tests/views/test_mail.py
+++ b/patchwork/tests/views/test_mail.py
@@ -175,7 +175,6 @@ def test_valid_hash(self):
 
 
 class OptoutPreexistingTest(OptoutTest):
-
     """Test that a duplicated opt-out behaves the same as the initial one"""
 
     def setUp(self):
@@ -280,7 +279,6 @@ def test_valid_hash(self):
 
 
 class OptinWithoutOptoutTest(TestCase):
-
     """Test an opt-in with no existing opt-out."""
 
     def test_opt_in_without_optout(self):
@@ -294,7 +292,6 @@ def test_opt_in_without_optout(self):
 
 
 class UserProfileOptoutFormTest(TestCase):
-
     """Validate presence of correct optin/optout forms."""
 
     form_re_template = (
diff --git a/patchwork/tests/views/test_utils.py b/patchwork/tests/views/test_utils.py
index 61fa0763..91f6b86e 100644
--- a/patchwork/tests/views/test_utils.py
+++ b/patchwork/tests/views/test_utils.py
@@ -38,11 +38,11 @@ def test_utf8_nbsp_tags(self):
         """Test that UTF-8 NBSP characters are correctly handled."""
         patch = create_patch(content='patch text\n')
         create_patch_comment(
-            patch=patch, content='comment\nAcked-by:\u00A0 foo'
+            patch=patch, content='comment\nAcked-by:\u00a0 foo'
         )
 
         mbox = utils.patch_to_mbox(patch)
-        self.assertIn('\u00A0 foo\n', mbox)
+        self.assertIn('\u00a0 foo\n', mbox)
 
     def test_multiple_tags(self):
         """Test that the mbox view appends tags correct.
diff --git a/patchwork/views/mail.py b/patchwork/views/mail.py
index 7c864c9c..8709f0ad 100644
--- a/patchwork/views/mail.py
+++ b/patchwork/views/mail.py
@@ -78,9 +78,9 @@ def _optinout(request, action):
 
     form = EmailForm(data=request.POST)
     if not form.is_valid():
-        context[
-            'error'
-        ] = 'There was an error in the form. Please review and re-submit.'
+        context['error'] = (
+            'There was an error in the form. Please review and re-submit.'
+        )
         context['form'] = form
         return render(request, html_template, context)