From 6ddf10c7470e5f15ed1aafdd3f2e839af1e1e17b Mon Sep 17 00:00:00 2001
From: Yay295 <Yay295@users.noreply.github.com>
Date: Mon, 23 Oct 2023 21:46:54 -0500
Subject: [PATCH] use format string instead of concatenation

Co-authored-by: Andrew Murray <3112309+radarhere@users.noreply.github.com>
---
 src/PIL/ImageOps.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/PIL/ImageOps.py b/src/PIL/ImageOps.py
index bd6e01c9f..4f83a4edb 100644
--- a/src/PIL/ImageOps.py
+++ b/src/PIL/ImageOps.py
@@ -56,7 +56,7 @@ def _lut(image, lut):
             lut = lut + lut + lut
         return image.point(lut)
     else:
-        msg = "not supported for image mode " + image.mode
+        msg = f"not supported for mode {image.mode}"
         raise OSError(msg)