如何使用urlretrieve更新Tkinter的进度条？

from tkinter import Tk, ttk
from urllib.request import urlretrieve

root = Tk()
progress = ttk.Progressbar(root, orient="horizontal", length=200, mode="determinate")
progress.pack()

def update_progress(block_num, block_size, total_size):
    progress["value"] = block_num * block_size * 100 / total_size
    root.update_idletasks()

url = "http://example.com/file.zip"  # 替换为要下载的文件URL
file_path = "path/to/save/file.zip"  # 替换为要保存的文件路径
urlretrieve(url, file_path, reporthook=update_progress)