diff --git a/data_structures/binary_tree/avl_tree.py b/data_structures/binary_tree/avl_tree.py
index 97236ac4d..11f4a1962 100644
--- a/data_structures/binary_tree/avl_tree.py
+++ b/data_structures/binary_tree/avl_tree.py
@@ -370,4 +370,4 @@ if __name__ == "__main__":
     random.shuffle(lst)
     for i in lst:
         t.del_node(i)
-        print(str(t))
\ No newline at end of file
+        print(str(t))