From 72b7d76d79b0e187426787616d96257b64292119 Mon Sep 17 00:00:00 2001
From: ProxyCausal <40151648+ProxyCausal@users.noreply.github.com>
Date: Wed, 19 Apr 2023 01:45:06 -0400
Subject: [PATCH] Print exception type for Python tool (#3126)

Useful for debugging agents e.g. KeyError in addition to just printing
the missing key
---
 langchain/tools/python/tool.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/langchain/tools/python/tool.py b/langchain/tools/python/tool.py
index 81339cedc3..607fec222d 100644
--- a/langchain/tools/python/tool.py
+++ b/langchain/tools/python/tool.py
@@ -89,7 +89,7 @@ class PythonAstREPLTool(BaseTool):
                     output = str(e)
                 return output
         except Exception as e:
-            return str(e)
+            return "{}: {}".format(type(e).__name__, str(e))
 
     async def _arun(self, query: str) -> str:
         """Use the tool asynchronously."""