From 88a45ea5a4a0640374290141a3feedcdc4ede6ed Mon Sep 17 00:00:00 2001
From: Colin Blackburn <colin@ximenes.org.uk>
Date: Wed, 13 Sep 2023 14:16:33 +0100
Subject: [PATCH] Return type can be None

---
 etlhelper/etl.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/etlhelper/etl.py b/etlhelper/etl.py
index be4779d..f13113a 100644
--- a/etlhelper/etl.py
+++ b/etlhelper/etl.py
@@ -175,7 +175,7 @@ def fetchone(
         row_factory: Callable = dict_row_factory,
         transform: Optional[Callable[[Chunk], Chunk]] = None,
         chunk_size: int = 1
-        ) -> Row:
+        ) -> Optional[Row]:
     """
     Get first result of query.  See iter_rows for details.  Note: iter_rows is
     recommended for looping over rows individually.