Is the behavior expected?

[Michele Simionato]

On Nov 26, 2:28 pm, bearophileH... at lycos.com wrote:
> Alphones:
>
> > it is a little deferent from other script language.
>
> See also here:http://en.wikipedia.org/wiki/Dynamic_scope#Dynamic_scoping
>
> Python doesn't have such automatic closures, probably for performance
> reasons and/or maybe to keep its C implementation simpler (maybe other
> people here can give you an explanation of this, I too am curious).

Python has closures which are just fine. The issue here is the for
loop.
In Python (as in Common Lisp) the for loop works by *mutating* a
single
loop index. The closures will get the latest value of the loop index.
In Haskell or Scheme the natural way to define a for loop is by
introducing a new index variable at each iteration: there is no
mutation. Each closure get its own index, with the right value.
It is a design choice: Guido and the Common Lisp implementors
are happy with mutating the loop index. I myself prefer the functional
way.

 Michele Simionato