From a9502872069409039c69b41d4857b2c7791c3752 Mon Sep 17 00:00:00 2001
From: Ryan Dao <daoduyducduong@gmail.com>
Date: Thu, 9 Mar 2023 16:36:15 -0800
Subject: [PATCH] Strip trailing whitespaces in agent's stop sequences (#1566)

Fixes #1489
---
 langchain/agents/agent.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/langchain/agents/agent.py b/langchain/agents/agent.py
index 095e7365..01bc233a 100644
--- a/langchain/agents/agent.py
+++ b/langchain/agents/agent.py
@@ -47,7 +47,10 @@ class Agent(BaseModel):
 
     @property
     def _stop(self) -> List[str]:
-        return [f"\n{self.observation_prefix}", f"\n\t{self.observation_prefix}"]
+        return [
+            f"\n{self.observation_prefix.rstrip()}",
+            f"\n\t{self.observation_prefix.rstrip()}",
+        ]
 
     def _construct_scratchpad(
         self, intermediate_steps: List[Tuple[AgentAction, str]]