diff --git a/python/pyarrow/table.pxi b/python/pyarrow/table.pxi
index 30350109ee436..27ef3e6a1a21b 100644
--- a/python/pyarrow/table.pxi
+++ b/python/pyarrow/table.pxi
@@ -5387,5 +5387,5 @@ list[tuple(str, str, FunctionOptions)]
         return _pc()._group_by(
             [self._table[c] for c in columns],
             [self._table[k] for k in self.keys],
-            group_by_aggrs            
+            group_by_aggrs
         ).rename_columns(column_names)
diff --git a/python/pyarrow/tests/test_table.py b/python/pyarrow/tests/test_table.py
index ef8a507581d96..3b8e928501e34 100644
--- a/python/pyarrow/tests/test_table.py
+++ b/python/pyarrow/tests/test_table.py
@@ -2024,8 +2024,11 @@ def sorted_by_keys(d):
         "values_count": [1]
     }
 
-    table = pa.table({'keys': ['a', 'b', 'a', 'b', 'a', 'b'], 'values': range(6)})
-    table_with_chunks = pa.Table.from_batches(table.to_batches(max_chunksize=3))
+    table = pa.table({
+        'keys': ['a', 'b', 'a', 'b', 'a', 'b'],
+        'values': range(6)})
+    table_with_chunks = pa.Table.from_batches(
+        table.to_batches(max_chunksize=3))
     r = table_with_chunks.group_by('keys').aggregate([('values', 'sum')])
     print(r)
     assert sorted_by_keys(r.to_pydict()) == {
@@ -2033,6 +2036,7 @@ def sorted_by_keys(d):
         "values_sum": [6, 9]
     }
 
+
 def test_table_to_recordbatchreader():
     table = pa.Table.from_pydict({'x': [1, 2, 3]})
     reader = table.to_reader()