[Python-3000] PEP 3138- String representation in Python 3000

Mon May 19 19:36:44 CEST 2008

On 2008年05月19日 19:19, Raymond Hettinger wrote:
> [MAL]
>> It's being able to write
>>>> str.transform('gzip').transform('uu')
 >>
>> which doesn't require knowledge about the modules doing the actual
>> work behind the scenes.
>> What is the reverse operation for the above example: 
> str.untransform('uu').untransform('gzip')?

Yes.
BTW: Since the codecs do bytes->bytes conversion, I should have
written bytes.transform('gzip').transform('uu')
> Why can't we use codecs and stick with the usual encode/decode methods?

That's what you can do in Python 2.x.
In Py 3.x, .encode() and .decode() have strict type requirements
on their return types. .transform() and .untransform() return the
same type, .encode() and .decode() return bytes and str resp.
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