diff --git a/app/main/views/send.py b/app/main/views/send.py
index 61e0c0083..b1b393a90 100644
--- a/app/main/views/send.py
+++ b/app/main/views/send.py
@@ -566,18 +566,18 @@ def _check_messages(service_id, template_id, upload_id, preview_row, **kwargs):
                 "url": url_for(
                     "main.send_one_off", service_id=service_id, template_id=template.id
                 ),
-                "text": "Back to message personalization"
+                "text": "Back to message personalization",
             },
-            "html": "Back to message personalization"
+            "html": "Back to message personalization",
         }
         back_link_from_preview = {
             "href": {
                 "url": url_for(
                     "main.send_one_off", service_id=service_id, template_id=template.id
                 ),
-                "text": "Back to message personalization"
+                "text": "Back to message personalization",
             },
-            "html": "Back to message personalization"
+            "html": "Back to message personalization",
         }
         choose_time_form = None
     else:
@@ -586,9 +586,9 @@ def _check_messages(service_id, template_id, upload_id, preview_row, **kwargs):
                 "url": url_for(
                     "main.send_messages", service_id=service_id, template_id=template.id
                 ),
-                "text": "Back to upload a file"
+                "text": "Back to upload a file",
             },
-            "html": "Back to upload a file"
+            "html": "Back to upload a file",
         }
         back_link_from_preview = {
             "href": {
@@ -598,9 +598,9 @@ def _check_messages(service_id, template_id, upload_id, preview_row, **kwargs):
                     template_id=template.id,
                     upload_id=upload_id,
                 ),
-                "text": "Back to check messages"
+                "text": "Back to check messages",
             },
-            "html": "Back to check messages"
+            "html": "Back to check messages",
         }
         choose_time_form = ChooseTimeForm()
 
@@ -786,9 +786,9 @@ def get_back_link(
                     service_id=service_id,
                     template_id=template.id,
                 ),
-                "text": "Back to select delivery time"
+                "text": "Back to select delivery time",
             },
-            "html": "Back to select delivery time"
+            "html": "Back to select delivery time",
         }
 
     if step_index == 0:
@@ -799,9 +799,9 @@ def get_back_link(
                         ".choose_template",
                         service_id=service_id,
                     ),
-                    "text": "Back to all templates"
+                    "text": "Back to all templates",
                 },
-                "html": "Back to all templates"
+                "html": "Back to all templates",
             }
         else:
             return {
@@ -811,14 +811,16 @@ def get_back_link(
                         service_id=service_id,
                         template_id=template.id,
                     ),
-                    "text": "Back to confirm your template"
+                    "text": "Back to confirm your template",
                 },
-                "html": "Back to confirm your template"
+                "html": "Back to confirm your template",
             }
 
     # fallback for other steps
     back_to_text = (
-        "Back to select recipients" if step_index == 1 else "Back to message personalization"
+        "Back to select recipients"
+        if step_index == 1
+        else "Back to message personalization"
     )
 
     return {
@@ -829,9 +831,9 @@ def get_back_link(
                 template_id=template.id,
                 step_index=step_index - 1,
             ),
-            "text": back_to_text
+            "text": back_to_text,
         },
-        "html": back_to_text
+        "html": back_to_text,
     }
 
 
diff --git a/app/main/views/tour.py b/app/main/views/tour.py
index e253167c8..d42ff1edf 100644
--- a/app/main/views/tour.py
+++ b/app/main/views/tour.py
@@ -142,13 +142,11 @@ def _get_tour_step_back_link(service_id, template_id, step_index):
         return {
             "href": {
                 "url": url_for(
-                    'main.begin_tour',
-                    service_id=service_id,
-                    template_id=template_id
+                    "main.begin_tour", service_id=service_id, template_id=template_id
                 ),
-                "text": "Back to tour start"
+                "text": "Back to tour start",
             },
-            "html": "Back to tour start"
+            "html": "Back to tour start",
         }
     else:
         return {
@@ -207,9 +205,9 @@ def check_tour_notification(service_id, template_id):
                 template_id=template_id,
                 step_index=len(placeholders),
             ),
-            "text": "Back to previous step"
+            "text": "Back to previous step",
         },
-        "html": "Back to previous step"
+        "html": "Back to previous step",
     }
 
     template.values = get_recipient_and_placeholders_from_session(
diff --git a/tests/app/main/views/test_send.py b/tests/app/main/views/test_send.py
index a18909070..11104325a 100644
--- a/tests/app/main/views/test_send.py
+++ b/tests/app/main/views/test_send.py
@@ -1451,7 +1451,7 @@ def test_send_one_off_offers_link_to_upload(
 
     assert back_link.text.strip() in {
         "Back to all templates",
-        "Back to confirm your template"
+        "Back to confirm your template",
     }
 
     assert link.text.strip() == "Upload a list of phone numbers"
@@ -2288,7 +2288,9 @@ def test_check_messages_back_link(
     actual_href = page.find_all("a", {"class": "usa-back-link"})[0]["href"]
     expected_href = expected_url(service_id=SERVICE_ONE_ID, template_id=fake_uuid)
 
-    assert actual_href != "#", "Back link href fell back to '#' — missing correct back_link in view"
+    assert (
+        actual_href != "#"
+    ), "Back link href fell back to '#' — missing correct back_link in view"
     assert actual_href == expected_href
 
 
diff --git a/tests/app/s3_client/test_s3_csv_client.py b/tests/app/s3_client/test_s3_csv_client.py
index b2671f738..f5a89bee4 100644
--- a/tests/app/s3_client/test_s3_csv_client.py
+++ b/tests/app/s3_client/test_s3_csv_client.py
@@ -24,6 +24,8 @@ def test_sets_metadata(client_request, mocker):
 
 
 def test_removes_blank_lines():
-    filedata = {"data": "variable,phone number\r\ntest,+15555555555\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n"}
+    filedata = {
+        "data": "variable,phone number\r\ntest,+15555555555\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n"
+    }
     file_data = remove_blank_lines(filedata)
     assert file_data == {"data": "variable,phone number\r\ntest,+15555555555"}