Fix code formatting with ruff

Author: Aaraviitkgp

src/transformers/utils/hub.py

@@ -414,15 +414,15 @@ def cached_files(
         subfolder = ""
 
     if local_files_only or is_offline_mode():
-        cache_dirs_to_try= []
+        cache_dirs_to_try = []
 
         if cache_dir is not None:
             cache_dirs_to_try.append(cache_dir)
 
-        for env_var in ["HF_HOME","TRANSFORMERS_CACHE", "HF_HUB_CACHE"]:
-                env_cache = os.environ.get(env_var)
-                if env_cache and env_cache not in cache_dirs_to_try:
-                    cache_dirs_to_try.append(env_cache)
+        for env_var in ["HF_HOME", "TRANSFORMERS_CACHE", "HF_HUB_CACHE"]:
+            env_cache = os.environ.get(env_var)
+            if env_cache and env_cache not in cache_dirs_to_try:
+                cache_dirs_to_try.append(env_cache)
 
         default_cache = default_cache_path
         if default_cache not in cache_dirs_to_try:

tests/utils/test.py

@@ -109,8 +109,11 @@ def guarded_socket(*args, **kwargs):
             if "NETWORK_ATTEMPTED" in result.stdout:
                 self.fail(f"Network access attempted despite warm cache: {result.stdout}")
 
-            self.assertIn("OFFLINE_SUCCESS", result.stdout,
-                         f"Failed to load offline:\nSTDOUT: {result.stdout}\nSTDERR: {result.stderr}")
+            self.assertIn(
+                "OFFLINE_SUCCESS",
+                result.stdout,
+                f"Failed to load offline:\nSTDOUT: {result.stdout}\nSTDERR: {result.stderr}",
+            )
             self.assertEqual(result.returncode, 0)
 
     def test_pipeline_offline_after_subprocess_warm(self):
@@ -134,8 +137,9 @@ def test_pipeline_offline_after_subprocess_warm(self):
 print("WARMED")
 """
 
-            result = subprocess.run([sys.executable, "-c", warm_script],
-                                  capture_output=True, text=True, env=env, timeout=120)
+            result = subprocess.run(
+                [sys.executable, "-c", warm_script], capture_output=True, text=True, env=env, timeout=120
+            )
             self.assertEqual(result.returncode, 0)
 
             # Load offline
@@ -165,8 +169,9 @@ def no_socket(*args, **kwargs):
     exit(1)
 """
 
-            result = subprocess.run([sys.executable, "-c", offline_script],
-                                  capture_output=True, text=True, env=env, timeout=120)
+            result = subprocess.run(
+                [sys.executable, "-c", offline_script], capture_output=True, text=True, env=env, timeout=120
+            )
 
             self.assertNotIn("BLOCKED", result.stdout, "Network access attempted")
             self.assertIn("SUCCESS", result.stdout)