[Python-Dev] Changing string constants to byte arrays in Py3k

[M.-A. Lemburg]

On 2007-05-05 18:11, Steven Bethard wrote:
> On 5/5/07, M.-A. Lemburg <mal at egenix.com> wrote:
>> On 2007-05-04 19:51, Guido van Rossum wrote:
>> > [-python-dev]
>> >
>> > On 5/4/07, Fred L. Drake, Jr. <fdrake at acm.org> wrote:
>> >> On Friday 04 May 2007, M.-A. Lemburg wrote:
>> >>  > I also suggest making all bytes literals immutable to avoid running
>> >>  > into any issues like the above.
>> >>
>> >> +1 from me.
>> >
>> > Rather than adding immutability to bytes objects (which has big
>> > implementation and type checking implications), consider using
>> > buffer(b"123") as an immutable bytes literal. You can freely
>> > concatenate and compare buffer objects with bytes objects.
>>
>> I like Georg's idea of having an immutable bytes subclass.
>> b"abc" could then be a shortcut constructor for this subclass.
>>
>> In general, I don't think it's a good idea to have literals
>> turn into mutable objects, since literals are normally perceived
>> as being constant.
> 
> Does that mean you want list literals to be immutable too?
> 
>    lst = ['a', 'b', 'c']
>    lst.append('d') # raises an error?

Sorry, I was referring to Python literals:

http://docs.python.org/ref/literals.html

ie. strings and numeric constant values defined in a Python program.

-- 
Marc-Andre Lemburg
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