code: def init_notification(self, playingsong):
          '''第一次桌面通知时加入图片'''
  
          logger.debug('init_notification')
  
          old_title = playingsong['title']
          self.cover_file = tempfile.NamedTemporaryFile(
              suffix='.jpg', dir=self._tempdir)
          if not self.get_pic(playingsong, self.cover_file.name):
              return
          title = playingsong['title']
          if old_title != title:
              # 已切换至下一首歌
              return
          self.has_cover = True
          content = playingsong['artist'] + ' - ' + playingsong['albumtitle']
          send_notification(title.decode('utf-8'),
                            content.decode('utf-8'),
                            self.cover_file.namef init_notification(self, playingsong):
          '''第一次桌面通知时加入图片'''
  
          logger.debug('init_notification')
  
          old_title = playingsong['title']
          self.cover_file = tempfile.NamedTemporaryFile(
              suffix='.jpg', dir=self._tempdir)
          if not self.get_pic(playingsong, self.cover_file.name):
              return
          title = playingsong['title']
          if old_title != title:
              # 已切换至下一首歌
              return
          self.has_cover = True
          content = playingsong['artist'] + ' - ' + playingsong['albumtitle']
          send_notification(title.decode('utf-8'),
                            content.decode('utf-8'),
                            self.cover_file.name)
docs: 第一次桌面通知时加入图片