Larry Hastings <la...@hastings.org> added the comment:

It's true that, for example, dir_fd parameters won't work on Windows.  The 
solution is to always accept the parameters and throw NotImplementedError on 
platforms where the functionality isn't available.

Here are my thoughts on the interface for link().  Since the two dir_fd 
parameters are independent--you might specify none, one, or both--I think the 
dir_fd=(src,dst) form would be obnoxious.  And polymorphic parameters (accept a 
string or a tuple of string and fd) are nearly always a bad idea; the % 
operator on strings is a good example of what can go wrong.  So I think you 
should stick with the original interface, with independent explicit keyword 
arguments.

I'd prefer that we did this everywhere it made sense, including adding a 
follow_symlinks parameter to stat().  But obviously you should prioritize 
places where we want to get rid of functions that are only in trunk (3.3) so 
far.

I suppose there's precedent for "followlinks"; it's very old, predating PEP 8.  
Personally I'd overlook it if I were doing the implementation and spell the new 
parameters "follow_symlinks"--or at least I'd try it and see what the community 
thought.  Anyway, there's no established precedent for "dir_fd" and 
"remove_dir".  So I'd certainly prefer PEP 8 spellings for those.

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue14626>
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