code: def vlcpanel_factory(filepath, volume=None):
      
  
      vlc_panel_cls = VLCPanel
      VLCPanel.filepath = filepath
      if volume is not None:
          VLCPanel.volume = volume
  
      return vlc_panel_cls
docs: Returns a VLCPanel class
  
      Parameters
      ----------
      filepath: String
      \tFile path of video
      volume: Float, optional
      \tSound volume