[Python-Dev] listcomps vs. for loops
Guido van Rossum
guido at python.org
Mon Oct 20 13:48:00 EDT 2003
> >> We are indeed sure (sadly) that list comprehensions leak control
> >> variable names.
> >
> > But they shouldn't. It can be fixed by renaming them (e.g. numeric
> > names with a leading dot).
>
> ?!?! When listcomps were introduced, you were strongly against any
> changes that would make it difficult to switch back and forth between a
> listcomp and its corresponding equivalent for loop.
I don't recall what I said then. Did I say it was a feature that
L = [x for x in R]
print x
would print the last item of R?
> Are you changing your position or are you suggesting that for loops
> should grow private names?
No, only list comps.
--Guido van Rossum (home page: http://www.python.org/~guido/)
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