如何在线程中运行Flask SocketIO？

from flask import Flask, render_template
from flask_socketio import SocketIO
import threading

app = Flask(__name__)
socketio = SocketIO(app)

@app.route('/')
def index():
    return render_template('index.html')

def background_thread():
    # 在这里编写需要在后台线程中执行的代码
    while True:
        # 发送消息给所有连接的客户端
        socketio.emit('message', 'Background Thread Message', namespace='/test')
        socketio.sleep(1)  # 每隔1秒发送一次消息

@socketio.on('connect', namespace='/test')
def test_connect():
    # 启动后台线程
    thread = threading.Thread(target=background_thread)
    thread.start()

if __name__ == '__main__':
    socketio.run(app)

pip install flask
pip install flask-socketio