Deduplicate blackening (#81802)

script/hassfest/usb.py

@@ -1,19 +1,8 @@
 """Generate usb file."""
 from __future__ import annotations
 
-import black
-
 from .model import Config, Integration
-from .serializer import to_string
-
-BASE = """
-\"\"\"Automatically generated by hassfest.
-
-To update, run python3 -m script.hassfest
-\"\"\"
-
-USB = {}
-""".strip()
+from .serializer import format_python_namespace
 
 
 def generate_and_validate(integrations: list[dict[str, str]]) -> str:
@@ -39,7 +28,7 @@ def generate_and_validate(integrations: list[dict[str, str]]) -> str:
                 }
             )
 
-    return black.format_str(BASE.format(to_string(match_list)), mode=black.Mode())
+    return format_python_namespace({"USB": match_list})
 
 
 def validate(integrations: dict[str, Integration], config: Config) -> None: