Python critique

[Benjamin Kaplan]

On Fri, Dec 10, 2010 at 5:46 PM, Octavian Rasnita <orasnita at gmail.com> wrote:
> From: "John Nagle" <nagle at animats.com>
>> On 12/10/2010 2:31 AM, kolo 32 wrote:
>>> Hi, all,
>>>
>>> Python critique from strchr.com:
>>>
>>> http://www.strchr.com/python_critique
>>
>>    I have criticisms of Python, but those aren't them.
>>
>>    Probably the biggest practical problem with CPython is
>> that C modules have to be closely matched to the version of
>> CPython.  There's no well-defined API that doesn't change.
>> This make life easier for Guido and tough on everybody else.
>> That's the real cause of Python's "version hell".
>>
>>    On the scope front, given the lack of declarations, Python
>> has done reasonably well.  Scopes in Python aren't as narrow
>> as one might like, but this isn't a major headache.
>
> How narrow are the scopes in Python?
> Is each block (each level of indentation) a scope?
> If it is, then I think it is very enough because the other cases can be detected easier or it might not appear at all in a well-written program.
> If it is not, then yes, it is a problem.
>
> Can you please tell me how to write the following program in Python?
>
> my $n = 1;
>
> {
>  my $n = 2;
>  print "$n\n";
> }
>
> print "$n\n";
>
> If this program if ran in Perl, it prints:
> 2
> 1
>
> I have tried to write it, but I don't know how I can create that block because it tells that there is an unexpected indent.
>
> Thanks.
>
> Octavian


The only scopes Python has are module and function. Python doesn't
have declarations like Perl (or most other languages), so there's no
way to specify that you want a different variable within the block.