diff --git a/docker/jupyter/unsloth_branding.py b/docker/jupyter/unsloth_branding.py
index 5287869a6a..7c8db0ccfc 100644
--- a/docker/jupyter/unsloth_branding.py
+++ b/docker/jupyter/unsloth_branding.py
@@ -58,7 +58,7 @@ SPLASH_PLUGIN_ID = "unsloth-jupyterlab:splash"
 LOGO_DATA_URI_PREFIX = "data:image/png;base64,iVBOR"
 
 
-def resolve_paths(venv_share=None, jupyter_server_dir=None, config_dirs=None):
+def resolve_paths(venv_share = None, jupyter_server_dir = None, config_dirs = None):
     """Resolve the installed locations of every checked branding asset.
 
     Defaults point at the live venv + the installed jupyter_server package. Tests
@@ -68,7 +68,6 @@ def resolve_paths(venv_share=None, jupyter_server_dir=None, config_dirs=None):
         venv_share = os.path.join(sys.prefix, "share", "jupyter")
     if jupyter_server_dir is None:
         import jupyter_server  # local import: only needed for live resolution
-
         jupyter_server_dir = os.path.dirname(jupyter_server.__file__)
     labext_dir = os.path.join(venv_share, "labextensions", LABEXT_NAME)
 
@@ -79,7 +78,6 @@ def resolve_paths(venv_share=None, jupyter_server_dir=None, config_dirs=None):
     if config_dirs is None:
         try:
             from jupyter_core.paths import jupyter_config_path
-
             config_dirs = jupyter_config_path()
         except Exception:
             config_dirs = []
diff --git a/tests/studio/test_branding_guard.py b/tests/studio/test_branding_guard.py
index 46f94ebac5..dd88306dd1 100644
--- a/tests/studio/test_branding_guard.py
+++ b/tests/studio/test_branding_guard.py
@@ -45,15 +45,17 @@ def _stage(tmp_path):
     labext = venv_share / "labextensions" / ub.LABEXT_NAME
     (labext / "static").mkdir(parents = True)
     (labext / "package.json").write_text(json.dumps({"name": ub.LABEXT_NAME}), encoding = "utf-8")
-    bundle = " ".join([
-        ub.PHRASE,
-        ub.SHORT_LABEL,
-        ub.COPYRIGHT,
-        ub.AGPL_URL,
-        ub.ABOUT_PLUGIN_ID,
-        ub.SPLASH_PLUGIN_ID,
-        ub.LOGO_DATA_URI_PREFIX + "AAAAdummyimagebytes",
-    ])
+    bundle = " ".join(
+        [
+            ub.PHRASE,
+            ub.SHORT_LABEL,
+            ub.COPYRIGHT,
+            ub.AGPL_URL,
+            ub.ABOUT_PLUGIN_ID,
+            ub.SPLASH_PLUGIN_ID,
+            ub.LOGO_DATA_URI_PREFIX + "AAAAdummyimagebytes",
+        ]
+    )
     (labext / "static" / "remoteEntry.abc123.js").write_text(bundle, encoding = "utf-8")
 
     (js_dir / "templates").mkdir(parents = True)
@@ -121,7 +123,6 @@ def _rebrand_labext(paths):
 
 def _strip_bundle_phrase(paths):
     import glob
-
     for path in glob.glob(os.path.join(paths["labext_static"], "*.js")):
         with open(path, encoding = "utf-8") as f:
             text = f.read()
@@ -131,7 +132,6 @@ def _strip_bundle_phrase(paths):
 
 def _strip_bundle_logo(paths):
     import glob
-
     for path in glob.glob(os.path.join(paths["labext_static"], "*.js")):
         with open(path, encoding = "utf-8") as f:
             text = f.read()
@@ -210,7 +210,16 @@ def test_attribution_sources_have_no_encoded_obfuscation():
         os.path.join(src_dir, "unsloth_labext", "src", "about.ts"),
         os.path.join(src_dir, "unsloth_labext", "src", "splash.ts"),
     ]
-    forbidden = ["b64decode", "b64encode", "atob(", "btoa(", "fromCharCode", "unescape(", "rot13", "codecs.decode"]
+    forbidden = [
+        "b64decode",
+        "b64encode",
+        "atob(",
+        "btoa(",
+        "fromCharCode",
+        "unescape(",
+        "rot13",
+        "codecs.decode",
+    ]
     for path in files:
         with open(path, encoding = "utf-8") as f:
             text = f.read()
@@ -226,7 +235,9 @@ def test_canonical_phrase_is_plain_text_in_definition_files():
     markers as plain constants (the runtime PHRASE value matches, even though the
     source wraps it across adjacent literals)."""
     src_dir = os.path.join(REPO, "docker", "jupyter")
-    ts = open(os.path.join(src_dir, "unsloth_labext", "src", "branding.ts"), encoding = "utf-8").read()
+    ts = open(
+        os.path.join(src_dir, "unsloth_labext", "src", "branding.ts"), encoding = "utf-8"
+    ).read()
     assert ub.PHRASE in ts, "branding.ts must hold the full PHRASE as one literal"
     py = open(os.path.join(src_dir, "unsloth_branding.py"), encoding = "utf-8").read()
     for marker in (ub.SHORT_LABEL, ub.COPYRIGHT, ub.SOURCE_URL, ub.AGPL_URL, ub.THEME_NAME):