diff --git a/tests/python/test_cross_platform_parity.py b/tests/python/test_cross_platform_parity.py
index 1262b20af9..384dc858bc 100644
--- a/tests/python/test_cross_platform_parity.py
+++ b/tests/python/test_cross_platform_parity.py
@@ -475,17 +475,15 @@ class TestPinnedRocmLeafDigitParity:
     def test_install_ps1_pinned_reroute_requires_rocm_digit(self):
         text = INSTALL_PS1.read_text(encoding = "utf-8")
         # The pinned gfx*/rocm reroute must require a digit after rocm.
-        assert re.search(
-            r"\$_pinLeaf -like 'gfx\*' -or \$_pinLeaf -match '\^rocm\\d'", text
-        ), (
+        assert re.search(r"\$_pinLeaf -like 'gfx\*' -or \$_pinLeaf -match '\^rocm\\d'", text), (
             "install.ps1 pinned-index reroute must use -match '^rocm\\d' (not a bare "
             "-like 'rocm*'), so rocm-current / rocm-rel-* fall through to the verbatim "
             "install instead of the ROCm --default-index path"
         )
         # The broad glob must be gone from that reroute.
-        assert "-like 'rocm*'" not in text, (
-            "install.ps1 must not route a pinned index on a bare -like 'rocm*' glob"
-        )
+        assert (
+            "-like 'rocm*'" not in text
+        ), "install.ps1 must not route a pinned index on a bare -like 'rocm*' glob"
 
     def test_install_sh_repairable_requires_rocm_digit(self):
         text = INSTALL_SH.read_text(encoding = "utf-8")
diff --git a/tests/python/test_install_python_stack.py b/tests/python/test_install_python_stack.py
index d2ebf51eee..a991c09169 100644
--- a/tests/python/test_install_python_stack.py
+++ b/tests/python/test_install_python_stack.py
@@ -166,9 +166,15 @@ class TestPinnedIndexClearsUvEnv:
 
     def test_pinned_index_url_strips_uv_index_vars(self):
         cmd = [
-            "uv", "pip", "install", "--force-reinstall",
-            "torch", "torchvision", "torchaudio",
-            "--index-url", "https://download.pytorch.org/whl/cu128",
+            "uv",
+            "pip",
+            "install",
+            "--force-reinstall",
+            "torch",
+            "torchvision",
+            "torchaudio",
+            "--index-url",
+            "https://download.pytorch.org/whl/cu128",
         ]
         with mock.patch.dict(
             os.environ,