[Python-ideas] Variations on a loop

Georg Brandl g.brandl at gmx.net
Sat Aug 30 15:11:00 CEST 2008

Bruce Leban schrieb:
> On Fri, Aug 29, 2008 at 1:47 PM, David Blaschke
> <dwblas at gmail.com
> <mailto:dwblas at gmail.com>> wrote:
>     This idea
>     elif x == funky_empty:
>           result = 'no data'
>     Can be accomplished with
>     if not len(items):
>           result = 'no data'
>     which means that part of the proposal can be scratched IMHO.
> Not quite: len(items) requires iterating across the entire list which
> may not be necessary or desirable. Plus you may need an intermediate
> variable to store it. I think that's inferior.

This is moot anyway: in general, iterators have no __len__().


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Four shall be the number of spaces thou shalt indent, and the number of thy
indenting shall be four. Eight shalt thou not indent, nor either indent thou
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