[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

15-chatroom/README.md

@@ -1 +1 @@
-# WebSocket chatroom
+# WebSocket chatroom

15-chatroom/src/entry.py

@@ -32,17 +32,14 @@ async def fetch(self, request):
 
             # Send message history to the newly connected client
             if self.message_history:
-                history_msg = {
-                    "type": "history",
-                    "messages": self.message_history
-                }
+                history_msg = {"type": "history", "messages": self.message_history}
                 server.send(json.dumps(history_msg))
 
             # Send a welcome message
             welcome_msg = {
                 "type": "system",
                 "text": "Connected to chatroom",
-                "timestamp": self.get_timestamp()
+                "timestamp": self.get_timestamp(),
             }
             server.send(json.dumps(welcome_msg))
 
@@ -62,7 +59,7 @@ async def webSocketMessage(self, ws, message):
                 "type": "message",
                 "username": data.get("username", "Anonymous"),
                 "text": data.get("text", ""),
-                "timestamp": self.get_timestamp()
+                "timestamp": self.get_timestamp(),
             }
 
             # Add to history
@@ -113,7 +110,9 @@ async def fetch(self, request):
         # Serve the HTML page for the root path
         if pathname == "/":
             html_file = Path(__file__).parent / "chatroom.html"
-            return Response(html_file.read_text(), headers={"Content-Type": "text/html"})
+            return Response(
+                html_file.read_text(), headers={"Content-Type": "text/html"}
+            )
 
         # Handle room requests: /room/<name>
         if pathname.startswith("/room/"):
@@ -132,4 +131,6 @@ async def fetch(self, request):
             # Forward the request to the Durable Object
             return await stub.fetch(request)
 
-        return Response("Not found. Use /room/<name> to connect to a chatroom.", status=404)
+        return Response(
+            "Not found. Use /room/<name> to connect to a chatroom.", status=404
+        )