diff --git a/docs/scripts/patch_devsite_toc.py b/docs/scripts/patch_devsite_toc.py
index cfe805261..cbd904633 100644
--- a/docs/scripts/patch_devsite_toc.py
+++ b/docs/scripts/patch_devsite_toc.py
@@ -80,7 +80,9 @@ def __init__(self, dir_name, index_file_name):
                             # load the file to get the title
                             with open(f"{dir_name}/{file_name}.rst", "r") as f2:
                                 file_title = f2.readline().replace("\n", "")
-                                self.items.append({"name": file_title, "href": f"{file_name}.md"})
+                                self.items.append(
+                                    {"name": file_title, "href": f"{file_name}.md"}
+                                )
                     else:
                         # if we are out of the indented block, we are done
                         break
@@ -96,7 +98,7 @@ def copy_markdown(self):
         """
         Copy markdown files from _build/markdown/dir_name to _build/html/docfx_yaml
 
-        This is necessary because the markdown files in dub-directories 
+        This is necessary because the markdown files in dub-directories
         are not copied over by the docfx build by default
         """
         for file in os.listdir("_build/markdown/" + self.dir_name):
@@ -116,7 +118,11 @@ def validate_toc(toc_file_path, expected_section_list, added_sections):
         assert section.title in found_sections
     # make sure each rst file in each custom section dir is listed in the toc
     for section in added_sections:
-        items_in_toc = [d["items"] for d in current_toc[0]["items"] if d["name"] == section.title and ".rst"][0]
+        items_in_toc = [
+            d["items"]
+            for d in current_toc[0]["items"]
+            if d["name"] == section.title and ".rst"
+        ][0]
         items_in_dir = [f for f in os.listdir(section.dir_name) if f.endswith(".rst")]
         # subtract 1 for index
         assert len(items_in_toc) == len(items_in_dir) - 1
@@ -126,7 +132,11 @@ def validate_toc(toc_file_path, expected_section_list, added_sections):
                 assert any(d["href"] == f"{base_name}.md" for d in items_in_toc)
     # make sure the markdown files are present in the docfx_yaml directory
     for section in added_sections:
-        items_in_toc = [d["items"] for d in current_toc[0]["items"] if d["name"] == section.title and ".rst"][0]
+        items_in_toc = [
+            d["items"]
+            for d in current_toc[0]["items"]
+            if d["name"] == section.title and ".rst"
+        ][0]
         md_files = [d["href"] for d in items_in_toc]
         for file in md_files:
             assert os.path.exists(f"_build/html/docfx_yaml/{file}")
diff --git a/noxfile.py b/noxfile.py
index d62dbe000..5867703c8 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -427,17 +427,17 @@ def docfx(session):
     )
     # Customization: Add extra sections to the table of contents for the Standard vs Async clients
     import sys
+
     sys.path.append(os.path.abspath(os.path.join("docs", "scripts")))
     from docs.scripts import patch_devsite_toc
+
     toc_path = os.path.join("_build", "html", "docfx_yaml", "toc.yml")
     custom_sections = [
         patch_devsite_toc.TocSection(
-            dir_name="async_data_client",
-            index_file_name="async_data_usage.rst"
+            dir_name="async_data_client", index_file_name="async_data_usage.rst"
         ),
         patch_devsite_toc.TocSection(
-            dir_name="standard_client",
-            index_file_name="usage.rst"
+            dir_name="standard_client", index_file_name="usage.rst"
         ),
     ]
     patch_devsite_toc.add_sections(toc_path, custom_sections)
@@ -445,10 +445,15 @@ def docfx(session):
     patch_devsite_toc.validate_toc(
         toc_file_path=toc_path,
         expected_section_list=[
-            "Overview", "bigtable APIs", "Changelog", "Multiprocessing",
-            "Async Data Client", "Standard Client", "Bigtable"
+            "Overview",
+            "bigtable APIs",
+            "Changelog",
+            "Multiprocessing",
+            "Async Data Client",
+            "Standard Client",
+            "Bigtable",
         ],
-        added_sections=custom_sections
+        added_sections=custom_sections,
     )