From 096185a6e80d95c6daca3099d3614e9390fffb1a Mon Sep 17 00:00:00 2001
From: bt3gl <138340846+bt3gl-cryptographer@users.noreply.github.com>
Date: Tue, 8 Aug 2023 13:37:21 -0700
Subject: [PATCH] Create bt_postorder.py

---
 trees/bt_postorder.py | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 trees/bt_postorder.py

diff --git a/trees/bt_postorder.py b/trees/bt_postorder.py
new file mode 100644
index 0000000..e5d8826
--- /dev/null
+++ b/trees/bt_postorder.py
@@ -0,0 +1,11 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# author: bt3gl
+
+def postorder(root) -> list:
+        
+  if root is None:
+      return []
+    
+  return postorder(root.left) + postorder(root.right) + [root.val] 
+