YouTube视频下载播放程序的Pafy组件报错求助

错误日志 #

Exception in thread Thread-4:
Traceback (most recent call last):
  File "C:\Users\ibraheem\AppData\Local\Programs\Python\Python38\lib\threading.py", line 932, in _bootstrap_inner
    self.run()
  File "C:\Users\ibraheem\AppData\Local\Programs\Python\Python38\lib\threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\ibraheem\Downloads\YoutubeDownloader\source\gui\activity_dialog.py", line 34, in run
    raise e
  File "C:\Users\ibraheem\Downloads\YoutubeDownloader\source\gui\activity_dialog.py", line 30, in run
    self.res = self.function(*self.args, **self.kwargs)
  File "C:\Users\ibraheem\Downloads\YoutubeDownloader\source\utiles.py", line 27, in get_video_stream
    for stream in media.streams:
  File "C:\Users\ibraheem\Downloads\YoutubeDownloader\source\pafy\backend_shared.py", line 160, in streams
    self._process_streams()
  File "C:\Users\ibraheem\Downloads\YoutubeDownloader\source\pafy\backend_youtube_dl.py", line 83, in _process_streams
    allstreams = [YtdlStream(z, self) for z in self._ydl_info['formats']]
Traceback (most recent call last):
  File "C:\Users\ibraheem\Downloads\YoutubeDownloader\source\pafy\backend_youtube_dl.py", line 83, in <listcomp>
  File "C:\Users\ibraheem\Downloads\YoutubeDownloader\source\youtube_browser\browser.py", line 182, in <lambda>
    allstreams = [YtdlStream(z, self) for z in self._ydl_info['formats']]
  File "C:\Users\ibraheem\Downloads\YoutubeDownloader\source\pafy\backend_youtube_dl.py", line 107, in __init__
    self.searchResults.Bind(wx.EVT_MENU, lambda event: self.playVideo(), id=self.videoPlayItemId)
    self._rawbitrate = info.get('abr', 0) * 1024
  File "C:\Users\ibraheem\Downloads\YoutubeDownloader\source\youtube_browser\browser.py", line 134, in playVideo
TypeError: unsupported operand type(s) for *: 'NoneType' and 'int'
    stream = LoadingDialog(self, _("starting..."), get_video_stream, url).res
AttributeError: 'LoadingDialog' object has no attribute 'res'

1. 修复TypeError：None与int相乘错误 #

• 问题根源：pafy/backend_youtube_dl.py第107行中，info.get('abr', 0)返回了None（YouTube流信息未提供音频比特率字段），尝试与整数1024相乘触发类型错误。
• 修复代码：
  打开C:\Users\ibraheem\Downloads\YoutubeDownloader\source\pafy\backend_youtube_dl.py，找到第107行：

  self._rawbitrate = info.get('abr', 0) * 1024
  

  修改为：

  self._rawbitrate = (info.get('abr') or 0) * 1024
  

  此修改确保当abr为None时，自动用0替代，避免类型不兼容问题。

2. 修复AttributeError：LoadingDialog无res属性错误 #

• 问题根源：get_video_stream执行抛出TypeError时，LoadingDialog的run方法中self.res = self.function(...)未执行，导致res属性未初始化，后续访问时触发错误。
• 修复方案：
  方案一：先修复上述TypeError，确保get_video_stream正常执行，res属性会被正确赋值。
  方案二：修改youtube_browser/browser.py第134行代码，增加异常捕获：

  dialog = LoadingDialog(self, _("starting..."), get_video_stream, url)
  try:
      stream = dialog.res
  except AttributeError:
      wx.MessageBox(_("视频流加载失败，请检查网络或视频链接"), _("错误提示"))
      return
  

  方案三：修改LoadingDialog类（位于gui/activity_dialog.py），在__init__方法中初始化self.res = None，确保属性始终存在：

  def __init__(self, parent, message, function, *args, **kwargs):
      # 原有初始化代码
      self.res = None
      # 其他代码
  

内容的提问来源于stack exchange，提问作者ibraheem mohsen