Re: Nested function scope problem
- From: Slawomir Nowaczyk <slawomir.nowaczyk.847@xxxxxxxxxxxxx>
- Date: Fri, 04 Aug 2006 12:36:25 +0200
On Thu, 03 Aug 2006 17:27:26 -0300
Gerhard Fiedler <gelists@xxxxxxxxx> wrote:
#> But seriously, for my comment this seems off-topic.
Well, you wrote "but it's not really understandable with a C++ concept
of variable". It is perfectly understandable to me. That's all I said
(or, at least, all I wanted to say).
#> I did not say that you can't create Python behavior with C (of
#> course you can, you can do /everything/ in C :). You can build
#> constructs made up of C variables that simulate everything that any
#> Python construct does. That's not the point. The point is how the
#> simple, built-in language variable behaves.
I agree.
For me, Python variable behaves just like a C++ variable (a pointer,
sure, but that's minor point to me... YMMV).
#> > #> You also don't expect the "identity" of a and b to be the same
#> > #> after assigning one to the other.
#> >
#> > Don't I?
#>
#> I don't know. Try replacing your printf statements with something
#> like "printf("%x %i %i\n",&a,a,*a);" and watch the first column.
#> The address operator is probably for a C programmer the closest to
#> what the id() function is to a Python programmer.
I disagree. At least in my understanding, which, up to now, was
perfectly enough to explain everything about how Python variables
behave:
The address operator in C is what textual representation (i.e. what
you type, like "a") is in Python. Equivalent of id() is a dereference
operator.
Of course, there are probably other ways to look at this. But I still
do not see why people claim that there is a significant difference
between what variables are in Python and in C++.
--
Best wishes,
Slawomir Nowaczyk
( Slawomir.Nowaczyk@xxxxxxxxx )
If at first you don't succeed, redefine success.
.
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