Convert formatting to use ruff instead of yapf + isort (#26247)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

tests/lora/test_peft_helper.py

@@ -13,34 +13,27 @@ from vllm.lora.peft_helper import PEFTHelper
 ERROR_CASES = [
     (
         "test_rank",
-        {
-            "r": 1024
-        },
+        {"r": 1024},
         "is greater than max_lora_rank",
     ),
     (
         "test_bias",
-        {
-            "bias": "all"
-        },
+        {"bias": "all"},
         "Adapter bias cannot be used without bias_enabled",
     ),
-    ("test_dora", {
-        "use_dora": True
-    }, "does not yet support DoRA"),
+    ("test_dora", {"use_dora": True}, "does not yet support DoRA"),
     (
         "test_modules_to_save",
-        {
-            "modules_to_save": ["lm_head"]
-        },
+        {"modules_to_save": ["lm_head"]},
         "only supports modules_to_save being None",
     ),
 ]
 
 
 def test_peft_helper_pass(sql_lora_files, tmp_path):
-    peft_helper = PEFTHelper.from_local_dir(sql_lora_files,
-                                            max_position_embeddings=4096)
+    peft_helper = PEFTHelper.from_local_dir(
+        sql_lora_files, max_position_embeddings=4096
+    )
     lora_config = LoRAConfig(max_lora_rank=16, max_cpu_loras=3, max_loras=2)
     peft_helper.validate_legal(lora_config)
     assert peft_helper.r == 8
@@ -74,8 +67,7 @@ def test_peft_helper_pass(sql_lora_files, tmp_path):
     with open(config_path, "w") as f:
         json.dump(adapter_config, f)
 
-    peft_helper = PEFTHelper.from_local_dir(test_dir,
-                                            max_position_embeddings=4096)
+    peft_helper = PEFTHelper.from_local_dir(test_dir, max_position_embeddings=4096)
     peft_helper.validate_legal(lora_config)
     scaling = peft_helper.lora_alpha / math.sqrt(peft_helper.r)
     assert abs(peft_helper.vllm_lora_scaling_factor - scaling) < 1e-3
@@ -106,4 +98,5 @@ def test_peft_helper_error(
     # Test loading the adapter
     with pytest.raises(ValueError, match=expected_error):
         PEFTHelper.from_local_dir(
-            test_dir, max_position_embeddings=4096).validate_legal(lora_config)
+            test_dir, max_position_embeddings=4096
+        ).validate_legal(lora_config)