diff --git a/reasoning_gym/algorithmic/sentence_reordering.py b/reasoning_gym/algorithmic/sentence_reordering.py
index 069dda7c..57f19d6e 100644
--- a/reasoning_gym/algorithmic/sentence_reordering.py
+++ b/reasoning_gym/algorithmic/sentence_reordering.py
@@ -102,23 +102,16 @@ class SentenceReorderingDataset(ProceduralDataset):
                 goal_words = expected_answer.split()
                 answer_words = answer.split()
                 if len(goal_words) == len(answer_words):
-                    credit = [1 if goal_word.lower() == answer_word.lower() else 0 for goal_word, answer_word in zip(goal_words, answer_words)]
+                    credit = [
+                        1 if goal_word.lower() == answer_word.lower() else 0
+                        for goal_word, answer_word in zip(goal_words, answer_words)
+                    ]
                     reward = sum(credit) / len(credit)
                 else:
                     reward = 0.05
             except:
                 reward = 0.01
         return reward
-                
-                
-                
-                
-                
-                
-                
-
-
-
 
 
 register_dataset("sentence_reordering", SentenceReorderingDataset, SentenceReorderingConfig)
diff --git a/reasoning_gym/algorithmic/word_ladder.py b/reasoning_gym/algorithmic/word_ladder.py
index 40e36291..3be99138 100644
--- a/reasoning_gym/algorithmic/word_ladder.py
+++ b/reasoning_gym/algorithmic/word_ladder.py
@@ -8,7 +8,6 @@ from typing import Dict, List, Optional, Set, Tuple
 from ..data import get_data_file_path
 from ..factory import ProceduralDataset, register_dataset
 
-
 QUESTION_TEMPLATE = """Transform the word ladder '{start}' to '{end}' by changing one letter at a time.
                        Provide your answer as a comma-separated sequence of uppercase letters without spaces.
                        Each step must be a valid English word."""
diff --git a/reasoning_gym/arithmetic/basic_arithmetic.py b/reasoning_gym/arithmetic/basic_arithmetic.py
index efe9d465..c72ff143 100644
--- a/reasoning_gym/arithmetic/basic_arithmetic.py
+++ b/reasoning_gym/arithmetic/basic_arithmetic.py
@@ -225,16 +225,11 @@ class BasicArithmeticDataset(ProceduralDataset):
     def _format_question(self, rng: Random, expression: str) -> str:
         """Format the expression with clear answer positioning"""
         answer_instruction = "Put your final answer after '=' without additional text."
-        
+
         if self.config.format_style == "simple":
             return f"{answer_instruction} Calculate {expression} ="
         else:
-            templates = [
-                "What is {0} =",
-                "Solve {0}=",
-                "Compute {0} =",
-                "Evaluate: {0} ="
-            ]
+            templates = ["What is {0} =", "Solve {0}=", "Compute {0} =", "Evaluate: {0} ="]
             template = rng.choice(templates).format(expression)
             return f"{answer_instruction} {template}"
 
diff --git a/tests/test_sentence_reordering.py b/tests/test_sentence_reordering.py
index 05645c70..9348ec04 100644
--- a/tests/test_sentence_reordering.py
+++ b/tests/test_sentence_reordering.py
@@ -37,7 +37,7 @@ def test_getitem(dataset, config):
     assert "metadata" in item
     assert item["metadata"]["word_count"] >= config.min_words_in_sentence
     assert item["metadata"]["word_count"] <= config.max_words_in_sentence
-    assert len(item['answer'].split()) == item['metadata']['word_count']
+    assert len(item["answer"].split()) == item["metadata"]["word_count"]
 
 
 def test_key_error_in_getitem(dataset):