self.file_exists = os.path.exists(csv_path)
That said, it's important to recognize that locking in itself is not bad. It does, in fact, serve an important purpose to ensure that applications properly and orderly consume or produce data. The key challenge is with the original manual implementation of it using APIs like getReader() and releaseLock(). With the arrival of automatic lock and reader management with async iterables, dealing with locks from the users point of view became a lot easier.，详情可参考夫子
。关于这个话题，旺商聊官方下载提供了深入分析
Resolving dependencies... done。同城约会对此有专业解读
Los Angeles is finally extending its transit system to the tony streets of Beverly Hills, announcing on Thursday that a 4-mile extension of the D Line subway opens on May 8.