From 7feae62ad713583ea6ef58aa2f7fdef77ef144d3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EC=9D=B4=EA=B7=9C=EB=AF=BC?=
 <32768535+GyuminJack@users.noreply.github.com>
Date: Thu, 12 Sep 2024 00:21:00 +0900
Subject: [PATCH] core[patch]: Support non ASCII characters in tool output if
 user doesn't output string (#26319)

### simple modify
core: add supporting non english character

target issue is #26315
same issue on langgraph -
https://github.com/langchain-ai/langgraph/issues/1504
---
 libs/core/langchain_core/tools/base.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/core/langchain_core/tools/base.py b/libs/core/langchain_core/tools/base.py
index 9d35aa614fa..c5236ce743f 100644
--- a/libs/core/langchain_core/tools/base.py
+++ b/libs/core/langchain_core/tools/base.py
@@ -822,7 +822,7 @@ def _is_message_content_block(obj: Any) -> bool:
 
 def _stringify(content: Any) -> str:
     try:
-        return json.dumps(content)
+        return json.dumps(content, ensure_ascii=False)
     except Exception:
         return str(content)