mgna17

mgna17

V2EX member #144263, joined on 2015-10-25 10:53:07 +08:00
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第一种:第一行可以删,with 中用到的变量在退出 with 之后可以继续使用

第二种:python3 的文件对象有个 __del__ 函数,应该会自动释放的。python2 没有这个 __del__ 函数,不清楚
还一本正经的加了 2 个 label
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