部分小问题的修改

utils/websocket_server.py

@@ -9,14 +9,17 @@ class SocketManager:
         if room not in self.rooms:
             self.rooms[room] = []
         self.rooms[room].append(websocket)
+        if room.startswith('pict_op'):
+            websocket.send_text(str(len(self.rooms[room])))
 
     async def remove_from_room(self, room: str, websocket: WebSocket):
         if room in self.rooms:
             self.rooms[room].remove(websocket)
             if len(self.rooms[room]) == 0:
                 del self.rooms[room]
-                if room.startswith('detect_rtsp_'):
-                    print()
+            else:
+                if room.startswith('pict_op'):
+                    websocket.send_text(str(len(self.rooms[room])))
 
     async def broadcast_to_room(self, room: str, message: str, exclude_websocket: WebSocket = None):
         if room in self.rooms: