diff --git a/chat.py b/chat.py
index 4ed10d56c3110eaff5e3590f6851e52e004dba93..b19ebd1a4f77246f82b4916b91f162f10fabf743 100644
--- a/chat.py
+++ b/chat.py
@@ -45,11 +45,15 @@ async def echo(websocket):
         room_id = name[websocket]['room_id']
         #历史记录数量
         if "history_num" in event["type"]:
+            r = {
+                "type": "history_num",
+                "content": "{}",
+            }
             if room_id in history : 
                 h = len(history[room_id])
             else :
                 h = 0
-            r = {'type':'history_num','content':str(h)}
+            r['content'] = r['content'].format(h)
             message = json.dumps(r,ensure_ascii=False)
             await websocket.send(message)
         #历史记录
diff --git a/websockets/__pycache__/__init__.cpython-312.pyc b/websockets/__pycache__/__init__.cpython-312.pyc
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diff --git a/websockets/__pycache__/imports.cpython-312.pyc b/websockets/__pycache__/imports.cpython-312.pyc
new file mode 100644
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diff --git a/websockets/__pycache__/version.cpython-312.pyc b/websockets/__pycache__/version.cpython-312.pyc
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