Free tier available
self.seen_urls = set()
，详情可参考同城约会
From there, Michael took a less conventional path than many Silicon Valley executives by moving into government, serving from 2009 to 2011 as a White House fellow under President Barack Obama, serving as special assistant to then–Defense Secretary Robert Gates at the DOD where he managed projects in Afghanistan, Iraq, and Pakistan and oversaw efforts aimed at reducing bureaucracy to provide resources to soldiers.
self.conn = sqlite3.connect(db_path)
有了好用的原生功能和强大的 App，最后我们还需要一点点「手头功夫」。不需要学什么构图理论，只要养成这三个微小的习惯，你的出片率可以立马提高。