From 753aa9591aea643fd37a4d54736094dce2c73cf6 Mon Sep 17 00:00:00 2001
From: tangkong <tangkongrobert@gmail.com>
Date: Fri, 26 Jul 2024 10:42:43 -0700
Subject: [PATCH] BUG: provide default invalid index for TreeModel.index

---
 superscore/widgets/tree.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/superscore/widgets/tree.py b/superscore/widgets/tree.py
index 89300ba..f547547 100644
--- a/superscore/widgets/tree.py
+++ b/superscore/widgets/tree.py
@@ -286,7 +286,7 @@ def index(
         self,
         row: int,
         column: int,
-        parent: QtCore.QModelIndex = None
+        parent: QtCore.QModelIndex = QtCore.QModelIndex()
     ) -> QtCore.QModelIndex:
         """
         Returns the index of the item in the model.