From 44edb56cf78e6c9afab003d9a6dfc3a183f7ddae Mon Sep 17 00:00:00 2001
From: root <12112723@mail.sustech.edu.cn>
Date: Wed, 25 Dec 2024 09:29:37 +0000
Subject: [PATCH] update tool_call

---
 libs/core/langchain_core/messages/tool.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/core/langchain_core/messages/tool.py b/libs/core/langchain_core/messages/tool.py
index 25e6d368d8bd8..4dbe96f24f92a 100644
--- a/libs/core/langchain_core/messages/tool.py
+++ b/libs/core/langchain_core/messages/tool.py
@@ -7,7 +7,6 @@
 
 from langchain_core.messages.base import BaseMessage, BaseMessageChunk, merge_content
 from langchain_core.utils._merge import merge_dicts, merge_obj
-import re
 
 
 class ToolOutputMixin:
@@ -210,6 +209,7 @@ class ToolCall(TypedDict):
 
 
 def tool_call(*, name: str, args: dict[str, Any], id: Optional[str]) -> ToolCall:
+    import re
     if isinstance(args, str):
         try:
             # Extract JSON-like dictionary from string using regex