[issue9333] Expose a way to enable os.symlink on Windows

[Jason R. Coombs]

Jason R. Coombs <jaraco at jaraco.com> added the comment:

I'm not sure the setting has to be restored. All that's being added is an attempt to assign the symlink privilege to the current process token.

I would consider to attempt to assign the privilege when the Python process starts up (or when os is loaded) - and if the privilege can't be assigned, remove the .symlink function from os. This change could be coupled with also removing .symlink if running on XP (rather than raising the NotImplementedError).

This approach would avoid the need to expose additional functions, and most importantly would work best with existing implementations -- namely, that if os.symlink exists, one can create symlinks.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue9333>
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