我需要帮助我的YouTube视频下载器在Python中使用tkinter和pytube

import tkinter as tk
from pytube import YouTube

def download_video():
    video_url = url_entry.get()
    try:
        yt = YouTube(video_url)
        stream = yt.streams.get_highest_resolution()
        stream.download()
        status_label.config(text="下载完成！")
    except Exception as e:
        status_label.config(text="下载失败：" + str(e))

# 创建GUI窗口
window = tk.Tk()
window.title("YouTube视频下载器")

# 创建URL输入框和下载按钮
url_label = tk.Label(window, text="视频URL:")
url_label.pack()
url_entry = tk.Entry(window, width=50)
url_entry.pack()
download_button = tk.Button(window, text="下载", command=download_video)
download_button.pack()

# 创建状态标签
status_label = tk.Label(window, text="")
status_label.pack()

# 运行GUI窗口
window.mainloop()