From 61798d09d2fadbe6d2e52ac6c3dc086f2d50d4e3 Mon Sep 17 00:00:00 2001
From: Riya Sinha <33243383+riyavsinha@users.noreply.github.com>
Date: Mon, 7 Oct 2024 11:38:18 -0700
Subject: [PATCH] checkpoint: set CheckpointNS `ConfigurableFieldSpec` model
 default to empty string (#2019)

---
 libs/checkpoint/langgraph/checkpoint/base/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/checkpoint/langgraph/checkpoint/base/__init__.py b/libs/checkpoint/langgraph/checkpoint/base/__init__.py
index fb0eb925a..93d510daa 100644
--- a/libs/checkpoint/langgraph/checkpoint/base/__init__.py
+++ b/libs/checkpoint/langgraph/checkpoint/base/__init__.py
@@ -178,7 +178,7 @@ class CheckpointTuple(NamedTuple):
     annotation=str,
     name="Checkpoint NS",
     description='Checkpoint namespace. Denotes the path to the subgraph node the checkpoint originates from, separated by `|` character, e.g. `"child|grandchild"`. Defaults to "" (root graph).',
-    default=None,
+    default="",
     is_shared=True,
 )