如何检测服务器端是否禁用cookie

function checkCookie() {
  document.cookie = "testCookie=1";
  var cookieEnabled = document.cookie.indexOf("testCookie") != -1;
  if (!cookieEnabled) {
    alert("您的浏览器禁用了Cookie。");
  }
}

from flask import Flask, request

app = Flask(__name__)

@app.route('/')
def index():
    if 'Cookie' not in request.headers:
        return '您的浏览器禁用了Cookie。'
    else:
        return '您的浏览器已启用Cookie。'

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