diff --git a/aider/io.py b/aider/io.py
index 140847c9e..66ae26382 100644
--- a/aider/io.py
+++ b/aider/io.py
@@ -251,8 +251,9 @@ class InputOutput:
                 f"Invalid line_endings value: {line_endings}. "
                 f"Must be one of: {', '.join(valid_line_endings)}"
             )
-        self.newline = None if line_endings == "platform" \
-            else "\n" if line_endings == "lf" else "\r\n"
+        self.newline = (
+            None if line_endings == "platform" else "\n" if line_endings == "lf" else "\r\n"
+        )
         self.dry_run = dry_run
 
         current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")