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From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: Unicode 7
Date: Fri, 02 May 2014 22:19:55 -0400
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Xref: csiph.com comp.lang.python:70889

On 5/2/2014 9:15 PM, Chris Angelico wrote:

> (My reading of PEP 3131 is that NFKC is used; is that what's
> implemented, or was that a temporary measure and/or something for Py2
> to consider?)

The 3.4 docs say "The syntax of identifiers in Python is based on the 
Unicode standard annex UAX-31, with elaboration and changes as defined 
below; see also PEP 3131 for further details."
...
"All identifiers are converted into the normal form NFKC while parsing; 
comparison of identifiers is based on NFKC."

Without reading UAX-31, I don't know how much was changed, but I suspect 
not much. In any case, the current rules are intended and very unlikely 
to change as that would break code going either forward or back for 
little purpose.

-- 
Terry Jan Reedy