Tornado Websocket example for blog

updates_handler.py

class UpdatesHandler(websocket.WebSocketHandler):

    socket_clients = set()
    
    def open(self):
        self.socket_clients.add(self)
        
    def on_close(self):
        self.socket_clients.remove(self)
  
    @classmethod
    def send_updates(cls, data):
        for client in cls.socket_clients:
            client.write_message(data)
            
# Использовать можно из любого места
data = {
    'type': 'new_message',
    'data': 'Hello!'
}
UpdatesHandler.send_updates(data)