[Python-ideas] Changing semantics of for-loop variable
Greg Ewing
greg.ewing at canterbury.ac.nz
Wed Oct 5 01:20:35 CEST 2011
Jason Orendorff wrote:
> Also: What if the loop variable is also used elsewhere in the function?
>
> def f(seq):
> i = None
> for i in seq:
> pass
> return i
>
> Does the loop variable get a cell in this case?
No, because i is not referenced from an inner function.
There is no change from the current semantics in this case.
If it *were* referenced from an inner function, then cell
replacement would occur, notwithstanding the fact that
it's used elsewhere in the function.
--
Greg
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