问连接到Binance websocket时出错

EN

import websocket
import json

socket = 'wss://fstream.binance.com/ws'


def on_open(ws):
    subscribe_message = {"method": "SUBSCRIBE", "params":["btcusdt@trade"],"id": 1}
    ws.send(json.dumps(subscribe_message))


def on_message(ws, message):
    print("received a message")
    print(json.loads(message))


def on_close(ws):
    print("closed connection")

ws = websocket.WebSocketApp(socket, on_open=on_open, on_message=on_message, on_close=on_close)
ws.run_forever()