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Sat May 5 14:49:51 CEST 2007 · https://mail.python.org/pipermail/python-dev/2007-May/072990.html

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.

-- 
Marc-Andre Lemburg
eGenix.com

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