diff --git a/game-of-life-python/source_code_final/rplife/patterns.py b/game-of-life-python/source_code_final/rplife/patterns.py
index e9094b3762..bfcfd7362c 100644
--- a/game-of-life-python/source_code_final/rplife/patterns.py
+++ b/game-of-life-python/source_code_final/rplife/patterns.py
@@ -29,4 +29,6 @@ def get_pattern(name, file_name=PATTERNS_FILE):
 
 def get_all_patterns(file_name=PATTERNS_FILE):
     data = tomllib.loads(file_name.read_text(encoding="utf-8"))
-    return [Pattern.from_toml(name, toml_data) for name, toml_data in data.items()]
+    return [
+        Pattern.from_toml(name, toml_data) for name, toml_data in data.items()
+    ]