Ruff format with defaults.

src/auto_archiver/modules/csv_db/csv_db.py

@@ -9,14 +9,15 @@ from auto_archiver.core import Metadata
 
 class CSVDb(Database):
     """
-        Outputs results to a CSV file
+    Outputs results to a CSV file
     """
 
-    def done(self, item: Metadata, cached: bool=False) -> None:
+    def done(self, item: Metadata, cached: bool = False) -> None:
         """archival result ready - should be saved to DB"""
         logger.success(f"DONE {item}")
         is_empty = not os.path.isfile(self.csv_file) or os.path.getsize(self.csv_file) == 0
         with open(self.csv_file, "a", encoding="utf-8") as outf:
             writer = DictWriter(outf, fieldnames=asdict(Metadata()))
-            if is_empty: writer.writeheader()
+            if is_empty:
+                writer.writeheader()
             writer.writerow(asdict(item))