From 8a4670e1276cbcacae437fe33e41bb40a6a756b0 Mon Sep 17 00:00:00 2001
From: Nikhil Suresh <nikhilsuresh097@gmail.com>
Date: Sat, 26 Aug 2023 00:17:54 +0000
Subject: [PATCH] updated formatting changes

---
 libs/langchain/langchain/chains/qa_with_sources/base.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libs/langchain/langchain/chains/qa_with_sources/base.py b/libs/langchain/langchain/chains/qa_with_sources/base.py
index c7d0b76ab51..d0408059a8e 100644
--- a/libs/langchain/langchain/chains/qa_with_sources/base.py
+++ b/libs/langchain/langchain/chains/qa_with_sources/base.py
@@ -121,7 +121,9 @@ class BaseQAWithSourcesChain(Chain, ABC):
     def _split_sources(self, answer: str) -> Tuple[str, str]:
         """Split sources from answer."""
         if re.search(r"SOURCES?[:\s]", answer, re.IGNORECASE):
-            answer, sources = re.split(r"SOURCES?[:\s]|QUESTION:\s", answer, flags=re.IGNORECASE)[:2]
+            answer, sources = re.split(
+                r"SOURCES?[:\s]|QUESTION:\s", answer, flags=re.IGNORECASE
+            )[:2]
             sources = re.split(r"\n", sources)[0].strip()
         else:
             sources = ""