这个功能在下面这种情况下很有用：您想在一个目录中更改一个程序或配置文件，然后在另一个目录下的日志文件中查看结果。

This functionality could be useful if you wanted to change a program or configuration file in one directory and see the results in a log file in a different directory.

youdao

在这种情况中，所列出的. AN NOUNCE文件没有包含任何有帮助的内容，不过easy_install还会继续查看另一个所列的URL，这会证明它是一个下载目录。

In this case, the listed.announce file does not contain anything helpful, but easy_install is happy to keep looking at the other listed URL as well, which proves to be a download directory.

youdao