如何从url播放音频，同时在缓存中下载？

<audio controls src="音频URL"></audio>

import urllib.request

url = "音频URL"
filename = "本地缓存路径/文件名.mp3"  # 指定本地缓存路径和文件名

urllib.request.urlretrieve(url, filename)

var url = "音频URL";
var request = new XMLHttpRequest();
request.open('GET', url, true);
request.responseType = 'blob';

request.onload = function() {
  if (request.status === 200) {
    var blob = request.response;
    var a = document.createElement('a');
    var url = window.URL.createObjectURL(blob);
    var filename = "本地缓存路径/文件名.mp3";  // 指定本地缓存路径和文件名
    
    a.href = url;
    a.download = filename;
    a.click();
    window.URL.revokeObjectURL(url);
  }
};

request.send();