diff --git a/tests/version_compat/test_bitsandbytes_pinned_symbols.py b/tests/version_compat/test_bitsandbytes_pinned_symbols.py
index a615641523..6e1892767b 100644
--- a/tests/version_compat/test_bitsandbytes_pinned_symbols.py
+++ b/tests/version_compat/test_bitsandbytes_pinned_symbols.py
@@ -47,12 +47,10 @@ def test_bnb_functional_4bit(tag: str):
         "bitsandbytes/functional.py",
         "bitsandbytes/functional/__init__.py",
     ]
-    hit = first_match(
-        "bitsandbytes-foundation/bitsandbytes", tag, candidates
-    )
-    assert hit is not None, (
-        f"{tag}: bitsandbytes/functional[.py|/__init__.py] both missing"
-    )
+    hit = first_match("bitsandbytes-foundation/bitsandbytes", tag, candidates)
+    assert (
+        hit is not None
+    ), f"{tag}: bitsandbytes/functional[.py|/__init__.py] both missing"
     _, src = hit
     needed = ("dequantize_4bit", "quantize_4bit")
     missing = [n for n in needed if not has_def(src, n, "func") and n not in src]
diff --git a/tests/version_compat/test_peft_pinned_symbols.py b/tests/version_compat/test_peft_pinned_symbols.py
index d7ed6de65b..da6868fbad 100644
--- a/tests/version_compat/test_peft_pinned_symbols.py
+++ b/tests/version_compat/test_peft_pinned_symbols.py
@@ -87,9 +87,7 @@ def test_peft_lora_config_class(tag: str):
         src = fetch_text("huggingface/peft", tag, p)
         if src is not None and has_def(src, "LoraConfig", "class"):
             found_in.append(p)
-    assert found_in, (
-        f"{tag}: peft.tuners.lora.LoraConfig not in any of {candidates}"
-    )
+    assert found_in, f"{tag}: peft.tuners.lora.LoraConfig not in any of {candidates}"
 
 
 # -------------------------------------------------------------------------
@@ -111,9 +109,7 @@ def test_get_peft_model_function(tag: str):
         src = fetch_text("huggingface/peft", tag, p)
         if src is not None and has_def(src, "get_peft_model", "func"):
             return
-    pytest.fail(
-        f"{tag}: def get_peft_model(...) not found in any of {candidates}"
-    )
+    pytest.fail(f"{tag}: def get_peft_model(...) not found in any of {candidates}")
 
 
 # -------------------------------------------------------------------------
diff --git a/tests/version_compat/test_sentence_transformers_pinned_symbols.py b/tests/version_compat/test_sentence_transformers_pinned_symbols.py
index afb11ad224..2a8c33827c 100644
--- a/tests/version_compat/test_sentence_transformers_pinned_symbols.py
+++ b/tests/version_compat/test_sentence_transformers_pinned_symbols.py
@@ -50,10 +50,10 @@ ST_TAGS = [
 
 @pytest.mark.parametrize("tag", ST_TAGS)
 def test_st_top_level_exports(tag: str):
-    src = fetch_text("UKPLab/sentence-transformers", tag, "sentence_transformers/__init__.py")
-    assert src is not None, (
-        f"{tag}: sentence_transformers/__init__.py missing"
+    src = fetch_text(
+        "UKPLab/sentence-transformers", tag, "sentence_transformers/__init__.py"
     )
+    assert src is not None, f"{tag}: sentence_transformers/__init__.py missing"
     needed = ("SentenceTransformer", "SentenceTransformerTrainer")
     missing = [n for n in needed if n not in src]
     assert not missing, (
@@ -192,9 +192,9 @@ def test_st_util_helpers(tag: str):
         "sentence_transformers/util/__init__.py",
     ]
     hit = first_match("UKPLab/sentence-transformers", tag, candidates)
-    assert hit is not None, (
-        f"{tag}: sentence_transformers/util[.py|/__init__.py] both missing"
-    )
+    assert (
+        hit is not None
+    ), f"{tag}: sentence_transformers/util[.py|/__init__.py] both missing"
     _path, src = hit
     for fn in ("import_from_string", "load_dir_path"):
         defined_here = has_def(src, fn, "func")
diff --git a/tests/version_compat/test_trl_grpo_pinned_symbols.py b/tests/version_compat/test_trl_grpo_pinned_symbols.py
index ccf64f2c19..f5c373e76c 100644
--- a/tests/version_compat/test_trl_grpo_pinned_symbols.py
+++ b/tests/version_compat/test_trl_grpo_pinned_symbols.py
@@ -97,9 +97,9 @@ def test_grpo_trainer_class_canonical_path(tag: str):
         f"{tag}: trl/trainer/grpo_trainer.py missing — "
         f"unsloth.models.rl._patch_trl_rl_trainers('grpo_trainer') breaks"
     )
-    assert has_def(src, "GRPOTrainer", "class"), (
-        f"{tag}: trl.trainer.grpo_trainer.GRPOTrainer not defined as a class"
-    )
+    assert has_def(
+        src, "GRPOTrainer", "class"
+    ), f"{tag}: trl.trainer.grpo_trainer.GRPOTrainer not defined as a class"
 
 
 @pytest.mark.parametrize("tag", TRL_TAGS)
@@ -211,9 +211,7 @@ def test_trl_experimental_openenv_gated(tag: str):
         pytest.skip(f"{tag}: trl.experimental.openenv not present (OK)")
     # Module exists -> at minimum, `utils` submodule must be importable
     # because unsloth patches via `import trl.experimental.openenv.utils`.
-    utils_src = fetch_text(
-        "huggingface/trl", tag, "trl/experimental/openenv/utils.py"
-    )
+    utils_src = fetch_text("huggingface/trl", tag, "trl/experimental/openenv/utils.py")
     assert utils_src is not None, (
         f"{tag}: trl.experimental.openenv exists but utils.py missing; "
         f"unsloth/models/rl_replacements.py:1765 imports openenv.utils explicitly"
@@ -273,7 +271,7 @@ def test_trl_version_parseable(tag: str):
             src,
             re.MULTILINE,
         )
-        and re.search(r'^\s*__version__\s*=\s*version\s*\(', src, re.MULTILINE)
+        and re.search(r"^\s*__version__\s*=\s*version\s*\(", src, re.MULTILINE)
     )
     assert has_literal or has_subimport or has_metadata, (
         f"{tag}: trl.__version__ not exported via any known mechanism; "