使用Python和wxPython实现下载视频封面

import wx
import requests
from bs4 import BeautifulSoup

class DownloadCoverFrame(wx.Frame):
    def __init__(self, parent, title):
        super().__init__(parent, title=title, size=(400, 150))

        panel = wx.Panel(self)

        url_label = wx.StaticText(panel, label="YouTube 视频 URL:")
        self.url_text = wx.TextCtrl(panel)

        download_button = wx.Button(panel, label="下载封面")
        download_button.Bind(wx.EVT_BUTTON, self.on_download_button)

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(url_label, 0, wx.ALL, 5)
        sizer.Add(self.url_text, 0, wx.ALL | wx.EXPAND, 5)
        sizer.Add(download_button, 0, wx.ALL | wx.CENTER, 5)

        panel.SetSizer(sizer)

    def on_download_button(self, event):
        url = self.url_text.GetValue()

        try:
            response = requests.get(url)
            soup = BeautifulSoup(response.content, "html.parser")

            cover_url = soup.find("meta", property="og:image")["content"]

            filename = cover_url.split("/")[-1]
            with open(filename, "wb") as f:
                f.write(requests.get(cover_url).content)

            wx.MessageBox("封面已下载到当前目录", "成功", wx.OK | wx.ICON_INFORMATION)
        except Exception as e:
            wx.MessageBox(f"下载封面失败：{e}", "错误", wx.OK | wx.ICON_ERROR)

if __name__ == "__main__":
    app = wx.App()
    frame = DownloadCoverFrame(None, "YouTube 视频封面下载器")
    frame.Show()
    app.MainLoop()