It simply opens a file for you.

它只是为你打开一个文件。

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This code first opens a file, then locks it using file_lock.

代码首先打开一个文件，然后使用file_lock锁定它。

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When a process opens a file, it exists on disk even if deleted, as long as the process holds the file open.

当进程打开了某个文件时，只要该进程保持打开该文件，即使将其删除，它依然存在于磁盘中。

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But even downloading, which opens the intriguing question of whether you own or lease a digital file (more on that in a future column), may be a thing of the future past: left in the dust as streaming becomes ever more available, reliable, and cheaper.

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That helps avoid a painful court review of the takeover but opens the door for enterprising lawyers to file suit and then claim the subsequent increase in price came about because of their paperwork.

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