朗格冰川位于冰岛西部，朗格冰川以熔岩瀑布著称，而著名的代乐达通加温泉更是为朗格冰川添上一道亮丽的色彩。近日，两家旅行社在朗格冰川开凿出的世界最深人造冰穴对外开放，无疑又为这里增加了更多魅力。
I\'m trying to better understand the concept of \'autocommit\' when working with a Postgres (psycopg) connection.Let\'s say I have a fresh connection, set its isolation level to ISOLATION_LEVEL开发者_
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