如何使用iTune的API下载文件并通过python导入字符串？

import requests
import base64

file_url = "https://example.com/file.mp3"  # 替换为要下载的文件URL
api_url = f"https://itunes.apple.com/search?term={file_url}&entity=song&limit=1"

response = requests.get(api_url)
data = response.json()

download_url = data['results'][0]['previewUrl']

file_response = requests.get(download_url)
file_content = file_response.content

file_string = base64.b64encode(file_content).decode('utf-8')