diff --git a/kaldi_data_generator/main.py b/kaldi_data_generator/main.py
index 0b1ff4e3a1fd146c27e173232ca1ef2ea3192f50..1a6bf9afbab81966ff9bca0d16aab84bb7b49764 100644
--- a/kaldi_data_generator/main.py
+++ b/kaldi_data_generator/main.py
@@ -104,7 +104,9 @@ class HTRDataGenerator:
         self.extraction_mode = extraction
         self.accepted_classes = accepted_classes
         self.ignored_classes = ignored_classes
-        self.should_filter_by_class = bool(self.accepted_classes) or bool(self.ignored_classes)
+        self.should_filter_by_class = bool(self.accepted_classes) or bool(
+            self.ignored_classes
+        )
         self.accepted_worker_version_ids = accepted_worker_version_ids
         self.should_filter_by_worker = bool(self.accepted_worker_version_ids)
         self.style = style
@@ -852,7 +854,6 @@ def create_parser():
         help="List of ignored ml_class names. Filter lines by class",
     )
 
-
     parser.add_argument(
         "--accepted_classes",
         nargs="*",
@@ -924,7 +925,9 @@ def main():
             )
 
     if args.style and (args.accepted_classes or args.ignored_classes):
-        if set(STYLE_CLASSES) & (set(args.accepted_classes) | set(args.ignored_classes)):
+        if set(STYLE_CLASSES) & (
+            set(args.accepted_classes) | set(args.ignored_classes)
+        ):
             parser.error(
                 f"--style class values ({STYLE_CLASSES}) shouldn't be in the accepted_classes list "
                 f"(or ignored_classes list) "