[Python-Dev] listcomps vs. for loops
Guido van Rossum
guido at python.org
Thu Oct 23 00:17:28 EDT 2003
> Guido:
> > The variable of a for *statement* must be accessible after the loop
> > because you might want to break out of the loop with a specific
> > value. This is a common pattern that I have no intent of breaking.
[Greg]
> It wouldn't be a great hardship if the loop variable
> weren't accessible after the break, because you can
> always write
>
> for x in stuff:
> if meets_condition(x):
> result = x
> break
> do_something_with(result)
>
> which is arguably a clearer way to write it, anyway.
I don't know. It seems to add clutter. I don't see the big urge to
limit the scope of loop control variables.
--Guido van Rossum (home page: http://www.python.org/~guido/)
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