Raymond Hettinger <rhettin...@users.sourceforge.net> added the comment:

I would like this API to "sit and cook" for a good while.  There are many 
possible ways to add more methods and most be end-up being YAGNI. 
Also, my experience with dict.fromkeys() is that a fair number of people get 
confused by alternative constructors.  So, at this point I have zero interest 
in adding from_items().

Am taking the C optimizations under advisement.  In the meantime, there is no 
need to keep submitting patch variations.  The question is less how-to-do-it 
and more a question of whether-to-do-it.  We try not to add an alternate C 
paths unless a feature is an important building block.  There is an on-going 
maintenance cost and a risk of slightly different behaviors (at a minimum, the 
tracebacks look different and the code can't be traced through pdb).  That 
being said, there is a nice speed-up to be had, so I'll give that some weight.

----------
priority: normal -> low
resolution:  -> later

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue10667>
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