time.sleep(2 ** attempt) # 指数退避
While it didn’t make the cut, the Instax Square SQ1 is also worth a brief mention. Like the Mini 12, the Square SQ1 produces good-quality shots, is easy to set up and use, and features a built-in selfie mirror. The reason we didn’t include it above, however, is that it costs nearly twice as much as the Mini 12 at $159.95, though we do sometimes see it on sale for $100. That said, it might be worth a look if you prefer large 2.4 x 2.4-inch square prints and relatively true-to-life photos over vintage-looking stills. After all, the SQ1 is still cheaper than the Polaroid Flip and produces higher-quality images than the Kodak Mini Shot 3 Square Retro, which also prints similarly sized square shots.。业内人士推荐咪咕体育直播在线免费看作为进阶阅读
，更多细节参见下载安装 谷歌浏览器 开启极速安全的 上网之旅。
A process handle for cleanup，推荐阅读体育直播获取更多信息
return opt.Unknown()
The second tactic involves active engagement on Reddit, Quora, and similar community forums. This strategy works for a less obvious reason than you might expect. It's not primarily about direct traffic from forum posts, though that can be valuable. It's about creating authentic mentions and discussions of your content across platforms that AI models frequently encounter during training and web searches.