Incorrect scope of list comprehension variables
ethan at stoneleaf.us
Sun Apr 4 14:50:01 CEST 2010
Steve Howell wrote:
> On Apr 3, 9:58 pm, Tim Roberts <t... at probo.com> wrote:
>>Alain Ketterlin <al... at dpt-info.u-strasbg.fr> wrote:
>>>I've just spent a few hours debugging code similar to this:
>>>d = dict()
>>>for r in [1,2,3]:
>>> d[r] = [r for r in [4,5,6]]
>>Yes, this has been fixed in later revisions, but I'm curious to know what
>>led you to believe that a list comprehension created a new scope. I don't
>>that was ever promised.
> Common sense about how programming languages should work? As
> confirmed by later revisions?
Common sense? About *somebody else's* idea of how a programming
language should work?
Please. Experiment and read the manual.
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