Update data_structures/binary_tree/binary_tree_traversals.py

dylanbuchi · poyea · web-flow · commit e8fb8c031789 · 2021-10-26T14:48:48.000-03:00
Co-authored-by: John Law &lt;johnlaw.po@gmail.com&gt;
diff --git a/data_structures/binary_tree/binary_tree_traversals.py b/data_structures/binary_tree/binary_tree_traversals.py
@@ -13,7 +13,7 @@ class Node:
     right: NodeType = None
 
 
-NodeType = Optional[Node]
+NodeType = Node | None
 
 
 def make_tree() -> Node:
