'while' in list comprehension?

[Bob Gailer]

At 01:05 PM 10/22/2003, Emile van Sebille wrote:

>jsaul asks...
> > would then turn into
> >
> >     foo = [ i for i in bar while len(i)>0 ]
> >
> > Is there any reason for not having this kind of thing? I actually
> > miss it pretty often.
> >
>
>
>How is this different from:
>
>      foo = [ i for i in bar if len(i) ]

My reading is that the comprehension would stop at the first i whose len 
were 0. e.g.
foo = []
for i in bar:
     if len(i) == 0:break
     foo.append(i)

Bob Gailer
bgailer at alum.rpi.edu
303 442 2625
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