From 82f28ca9efc04efc11bb950b299a57e76d4db2bd Mon Sep 17 00:00:00 2001
From: Predrag Gruevski <2348618+obi1kenobi@users.noreply.github.com>
Date: Fri, 18 Aug 2023 14:37:10 -0400
Subject: [PATCH] `ChatPromptTemplate` is not an `ABC`, it's instantiated
 directly. (#9468)

Its own `__add__` method constructs `ChatPromptTemplate` objects
directly, it cannot be abstract.

Found while debugging something else with @nfcampos.
---
 libs/langchain/langchain/prompts/chat.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/langchain/langchain/prompts/chat.py b/libs/langchain/langchain/prompts/chat.py
index b6cd9e0c03610..3c34b9fd97459 100644
--- a/libs/langchain/langchain/prompts/chat.py
+++ b/libs/langchain/langchain/prompts/chat.py
@@ -337,7 +337,7 @@ def format_messages(self, **kwargs: Any) -> List[BaseMessage]:
 ]
 
 
-class ChatPromptTemplate(BaseChatPromptTemplate, ABC):
+class ChatPromptTemplate(BaseChatPromptTemplate):
     """A prompt template for chat models.
 
     Use to create flexible templated prompts for chat models.