Raymond Hettinger added the comment:

I'm not sure that python needs a neater way to make an empty generator.  It 
isn't a common use case and there isn't anything wrong with iter([]).

There are downsides to expanding an API.  It creates yet another thing to learn 
and remember.  Even now, few developers know about the two-argument form of 
iter().

----------
assignee:  -> rhettinger
nosy: +rhettinger

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<http://bugs.python.org/issue25215>
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