diff --git a/aider/io.py b/aider/io.py
index 26c4d091a..75a2d7cdb 100644
--- a/aider/io.py
+++ b/aider/io.py
@@ -378,7 +378,7 @@ class InputOutput:
                     if changed:
                         self.changed_files = changed
 
-                        #ai move all this ...
+                        # ai move all this ...
                         self.changed_files = process_file_changes(changed)
                         self.interrupt_input()
                         break
@@ -447,7 +447,7 @@ class InputOutput:
 
                     # Check if we were interrupted by a file change
                     if self.changed_files:
-                        #ai ...down to here!
+                        # ai ...down to here!
                         changed = " ".join(self.changed_files)
                         self.changed_files = None
 
diff --git a/aider/watch.py b/aider/watch.py
index 5e623337e..d9d5d4856 100644
--- a/aider/watch.py
+++ b/aider/watch.py
@@ -135,24 +135,16 @@ def watch_source_files(
                 result[file] = comments
         yield result
 
+
 def process_file_changes(changed):
     """Process file changes and handle special ! comments"""
-    if any(
-        "!" in comment
-        for comments in changed.values()
-        if comments
-        for comment in comments
-    ):
+    if any("!" in comment for comments in changed.values() if comments for comment in comments):
         return [
-            "\n".join(
-                comment
-                for comments in changed.values()
-                if comments
-                for comment in comments
-            )
+            "\n".join(comment for comments in changed.values() if comments for comment in comments)
         ]
     return list(changed.keys())
 
+
 def get_ai_comment(filepath, encoding="utf-8"):
     """Extract all AI comments from a file"""
     comments = []