[Python-Dev] Reintroduce or drop completly hex, bz2, rot13, ... codecs

[Walter Dörwald]

On 10.06.10 21:31, Terry Reedy wrote:

> On 6/10/2010 7:08 AM, M.-A. Lemburg wrote:
>> Walter Dörwald wrote:
> 
>>>> The PEP would also serve as a reference back to both this discussion and
>>>> the previous one (which was long enough ago that I've forgotten most of it).
>>>
>>> I too think that a PEP is required here.
>>
>> Fair enough. I'll write a PEP.
> 
> Thank you from me.
>>
>>> Codecs support several types of error handling that don't make sense for
>>> transform()/untransform(). What should 'abc'.decode('hex', 'replace')
>>> do? (In 2.6 it raises an assertion error, because errors *must* be strict).
> 
> I would expext either ValueError: errors arg must be 'strict' for 
> trransform

What use is an argument that must always have the same value?

'abc'.transform('hex', errors='strict', obey_the_flufl=True)

> or else TypeError: tranform takes 1 arg, 2 given.

IMHO that's the better option.

>> That's not really an issue since codecs don't have to implement
>> all error handling schemes.
>>
>> For starters, they will all only implement 'strict' mode.

I would prefer it if transformers were separate from codecs and had
their own registry.

Servus,
   Walter