[issue39924] pathlib handles missing `os.link`, `os.symlink` and `os.readlink` inconsistently

[Manjusaka]

Manjusaka <lizheao940510 at gmail.com> added the comment:

I don't think rename 'link_to'  to 'link' directly is a good idea. Because there are many third-party libs have used this name. Unless we can keep two names in this version, and remind people the 'link_to' function will be deprecated totally in a future version. But is there any way to make a function as deprecated?

About 'os.readlink', we can hide this function in the platform that doesn't support readlink() just like `epoll' in mac or etc.

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nosy: +Manjusaka

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