[CI][RFC] Replace black-jupyter with ruff-format (#37210)

Co-authored-by: Alison Shao <a.shao@wustl.edu>

test/registered/dcp/test_dcp_layout_unit.py

@@ -411,10 +411,13 @@ class TestGetDcpLens(CustomTestCase):
             )
             # The allocator widens from get_parallel(), not from the injected
             # server_args stand-in -- drive the cause, not the effect.
-            with patch(
-                "sglang.srt.mem_cache.kv_cache_configurator.current_platform.is_out_of_tree",
-                return_value=False,
-            ), rc.get_parallel().override(attn_dcp_size=dcp_size):
+            with (
+                patch(
+                    "sglang.srt.mem_cache.kv_cache_configurator.current_platform.is_out_of_tree",
+                    return_value=False,
+                ),
+                rc.get_parallel().override(attn_dcp_size=dcp_size),
+            ):
                 allocators[dcp_size] = (
                     KVCacheConfigurator._build_token_to_kv_pool_allocator(
                         configurator,

test/registered/dcp/test_qwen3p5_triton_dcp.py

@@ -87,7 +87,7 @@ class TestQwen35TritonDCPGsm8k(CustomTestCase):
 
         if is_in_ci():
             write_github_step_summary(
-                f"### test_a_gsm8k (qwen3.5-triton-dcp4)\n" f'{metrics["score"]=:.3f}\n'
+                f'### test_a_gsm8k (qwen3.5-triton-dcp4)\n{metrics["score"]=:.3f}\n'
             )
         self.assertGreater(metrics["score"], GSM8K_ACCURACY_THRESHOLD)
 

test/registered/dcp/test_reduce_scatter_along_dim.py

@@ -85,8 +85,7 @@ def multiprocess_test(file: str, nproc: int, timeout: int = 120) -> None:
         ) from e
 
     assert result.returncode == 0, (
-        f"torchrun (nproc={nproc}) failed with rc={result.returncode}\n"
-        f"{result.stdout}"
+        f"torchrun (nproc={nproc}) failed with rc={result.returncode}\n{result.stdout}"
     )