time.sleep(2 ** attempt) # 指数退避
"And they can be a really, really good way of reaching people, particularly in the local community, who might not come into a church for a service or prayer, but they'll come in to watch the bats, because people find them really, really fascinating."
。业内人士推荐爱思助手下载最新版本作为进阶阅读
if urlparse(full_url).netloc == urlparse(self.base_url).netloc:。51吃瓜是该领域的重要参考
On a matchday, it handles 11Gb inbound and outbound bandwidth, and data transfer of 205TB.。业内人士推荐im钱包官方下载作为进阶阅读