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

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

tests/compile/backend.py

@@ -23,8 +23,7 @@ class LazyInitPass(InductorPass):
     and then immediately invoke it.
     """
 
-    def __init__(self, pass_cls: type[VllmInductorPass],
-                 vllm_config: VllmConfig):
+    def __init__(self, pass_cls: type[VllmInductorPass], vllm_config: VllmConfig):
         self.pass_cls = pass_cls
         self.vllm_config = weakref.proxy(vllm_config)  # avoid cycle
 
@@ -45,20 +44,18 @@ class TestBackend:
     Inductor config is default-initialized from VllmConfig.CompilationConfig.
     """
 
-    def __init__(self, *passes: Union[InductorPass, Callable[[fx.Graph],
-                                                             None]]):
+    def __init__(self, *passes: Union[InductorPass, Callable[[fx.Graph], None]]):
         self.custom_passes = list(passes)
         compile_config = get_current_vllm_config().compilation_config
         self.inductor_config = compile_config.inductor_compile_config
-        self.inductor_config['force_disable_caches'] = True
-        self.inductor_config['post_grad_custom_post_pass'] = self.post_pass
+        self.inductor_config["force_disable_caches"] = True
+        self.inductor_config["post_grad_custom_post_pass"] = self.post_pass
 
     def __call__(self, graph: fx.GraphModule, example_inputs):
         self.graph_pre_compile = deepcopy(graph)
         from torch._inductor.compile_fx import compile_fx
-        return compile_fx(graph,
-                          example_inputs,
-                          config_patches=self.inductor_config)
+
+        return compile_fx(graph, example_inputs, config_patches=self.inductor_config)
 
     @with_pattern_match_debug
     def post_pass(self, graph: fx.Graph):
@@ -82,8 +79,7 @@ class TestBackend:
             assert num_pre > 0, f"Op {op.name()} not found in pre-pass graph"
             assert num_pre > num_post, f"All nodes remain for op {op.name()}"
             if fully_replaced:
-                assert num_post == 0, \
-                    f"Unexpected op {op.name()} in post-pass graph"
+                assert num_post == 0, f"Unexpected op {op.name()} in post-pass graph"
 
     def check_after_ops(self, ops: Sequence[OpOverload]):
         for op in ops: