[Python-Dev] make iter() return an empty iterator?

[Steve Holden]

Kevin Jacobs <jacobs at bioinformed.com> wrote:
> On 8/3/07, *Facundo Batista* <facundobatista at gmail.com 
> <mailto:facundobatista at gmail.com>> wrote:
> 
>     2007/8/3, Andrew Bennetts <andrew-pythondev at puzzling.org
>     <mailto:andrew-pythondev at puzzling.org>>:
> 
>      > I don't really think there's much reason to make "iter()"
>     work.  As you say,
> 
>     What bad thing could happen if we make iter() work? If nothing, we
>     should ask ourselves: which is the more intuitive behaviour to expect
>     of iter()? To raise an exception or to return an empty iterator?
> 
>     I'm +0 for the latter.
> 
> 
> -1.  I'm a heavy user of iterators on finite and infinite streams and, 
> for me, iter() is an error that I do not want to paper over.  The 
> alternate logic implies, e.g ., len() should return 0.
> 
-1 here too. iter() should have an argument just like sum() and len().

regards
  Steve
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