Find centralized, trusted content and collaborate around the technologies you use most.
Teams
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
我正在以艰难的方式从Learn Python中学习python，并且在ex37上他们希望我们进行搜索。我不知道@ 运算符是做什么的。谁能告诉我？