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Date: Tue, 03 Apr 2012 15:21:25 -0500
From: Evan Driscoll <driscoll@cs.wisc.edu>
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To: Tycho Andersen <tycho@tycho.ws>
Subject: Re: Re: No os.copy()?  Why not?
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On 01/-10/-28163 01:59 PM, Tycho Andersen wrote:
> Note, though, that this reads the whole file into memory. As many
> others have said, shutil is the most idiomatic option.

* most idiomatic
* clearest in terms of showing intent
* potentially fastest
* hardest to screw up (unlike concatenating file names into a
   'system' call)
* has at least a snowball's chance of persisting metadata associated
   with the file (even if shutil doesn't now, it could theoretically
   change)
* portable

There's basically nothing NOT to like about shutil, and at least one 
significant problems with all the other suggestions.

Evan