diff --git a/benchmarks/benchmark_latency.py b/benchmarks/benchmark_latency.py
index b1d68ea24694..71ec909cba48 100644
--- a/benchmarks/benchmark_latency.py
+++ b/benchmarks/benchmark_latency.py
@@ -43,9 +43,9 @@ def main(args: argparse.Namespace):
     # the engine will automatically process the request in multiple batches.
     llm = LLM(**dataclasses.asdict(engine_args))
     assert llm.llm_engine.model_config.max_model_len >= (
-        args.input_len + args.output_len), (
-            "Please ensure that max_model_len is greater than"
-            " the sum of input_len and output_len.")
+        args.input_len +
+        args.output_len), ("Please ensure that max_model_len is greater than"
+                           " the sum of input_len and output_len.")
 
     sampling_params = SamplingParams(
         n=args.n,
diff --git a/vllm/entrypoints/openai/serving_engine.py b/vllm/entrypoints/openai/serving_engine.py
index 05b5f95a5e59..d097bfcfc5ab 100644
--- a/vllm/entrypoints/openai/serving_engine.py
+++ b/vllm/entrypoints/openai/serving_engine.py
@@ -523,7 +523,7 @@ class OpenAIServing:
             return logprob.decoded_token
         return tokenizer.decode(token_id)
 
-    def _is_model_supported(self, model_name) -> bool:
+    def _is_model_supported(self, model_name: Optional[str]) -> bool:
         if not model_name:
             return True
         return self.models.is_base_model(model_name)
diff --git a/vllm/entrypoints/openai/serving_score.py b/vllm/entrypoints/openai/serving_score.py
index 01e2d3043610..a087a8d9ba0f 100644
--- a/vllm/entrypoints/openai/serving_score.py
+++ b/vllm/entrypoints/openai/serving_score.py
@@ -358,7 +358,12 @@ class ServingScores(OpenAIServing):
                 request.truncate_prompt_tokens,
             )
             return self.request_output_to_rerank_response(
-                final_res_batch, request_id, self._get_model_name(request.model), documents, top_n)
+                final_res_batch,
+                request_id,
+                self._get_model_name(request.model),
+                documents,
+                top_n,
+            )
         except asyncio.CancelledError:
             return self.create_error_response("Client disconnected")
         except ValueError as e:
diff --git a/vllm/model_executor/layers/mamba/mamba_mixer2.py b/vllm/model_executor/layers/mamba/mamba_mixer2.py
index a6a95c8da7e9..2bcf50e70713 100644
--- a/vllm/model_executor/layers/mamba/mamba_mixer2.py
+++ b/vllm/model_executor/layers/mamba/mamba_mixer2.py
@@ -134,7 +134,7 @@ def extra_groups_for_head_shards(ngroups: int, tp_size: int):
         return 0
 
     # for n_groups == 1, this is exactly tp_size - n_groups
-    return tp_size - ngroups 
+    return tp_size - ngroups
 
 
 def mamba_v2_sharded_weight_loader(
@@ -168,12 +168,9 @@ def mamba_v2_sharded_weight_loader(
             # - compute the rank into the loaded shard.
             # - if there is replication, different TP shards will
             #   take from the same rank.
-            if duplicate_groups:
-                # NOTE: currently we only support duplication
-                # in the case where num_groups == 1
-                rank = 0
-            else:
-                rank = tp_rank 
+            # NOTE: currently we only support duplication
+            # in the case where num_groups == 1
+            rank = 0 if duplicate_groups else tp_rank
 
             # - leftmost boundary index into loaded weight.
             loaded_skip = rank * shard_size
@@ -247,7 +244,7 @@ class MambaMixer2(CustomOp):
         assert num_heads % self.tp_size == 0, \
             "Tensor parallel world size must divide num heads."
 
-        
+
         assert (n_groups % self.tp_size) == 0 or n_groups == 1, \
             (
                 "If tensor parallel world size does not divide num_heads, "
diff --git a/vllm/utils.py b/vllm/utils.py
index dcafd5411bbb..25a3bdc6daff 100644
--- a/vllm/utils.py
+++ b/vllm/utils.py
@@ -1198,10 +1198,12 @@ class FlexibleArgumentParser(argparse.ArgumentParser):
         try:
             value = int(value)
         except ValueError:
-            raise argparse.ArgumentTypeError("Port must be an integer")
+            msg = "Port must be an integer"
+            raise argparse.ArgumentTypeError(msg) from None
 
         if not (1024 <= value <= 65535):
-            raise argparse.ArgumentTypeError("Port must be between 1024 and 65535")
+            raise argparse.ArgumentTypeError(
+                "Port must be between 1024 and 65535")
 
         return value
 
diff --git a/vllm/v1/worker/gpu_model_runner.py b/vllm/v1/worker/gpu_model_runner.py
index 000b17c99b21..0d76b1a35c74 100644
--- a/vllm/v1/worker/gpu_model_runner.py
+++ b/vllm/v1/worker/gpu_model_runner.py
@@ -1319,13 +1319,16 @@ class GPUModelRunner(LoRAModelRunnerMixin):
                     generators={},
                     max_num_logprobs=None,
                     no_penalties=True,
-                    prompt_token_ids=torch.ones_like(logits, dtype=torch.int64),
+                    prompt_token_ids=torch.ones_like(logits,
+                                                     dtype=torch.int64),
                     frequency_penalties=dummy_tensors(0.1),
                     presence_penalties=dummy_tensors(0.1),
                     repetition_penalties=dummy_tensors(0.1),
                     output_token_ids=[[] for _ in range(num_reqs)],
                     min_tokens={},
-                    logit_bias=[None for _ in range(num_reqs)])
+                    logit_bias=[None for _ in range(num_reqs)],
+                    allowed_token_ids_mask=None,
+                )
                 sampler_output = self.model.sample(
                     logits=logits, sampling_metadata=dummy_metadata)
             else: