On 2008-05-09 18:06, Guido van Rossum wrote:
On Fri, May 9, 2008 at 3:54 AM, M.-A. Lemburg <[EMAIL PROTECTED]> wrote:
On 2008-05-08 22:55, Terry Reedy wrote:
Functions that map unicode->unicode or bytes->bytes could be called
transcoders.  Each type could be given a .transcode method to go along with
but contrast with .encode or .decode.
Are you suggesting to have two separate methods which then
allow same-type-conversions ? One for encoding to the same
type and one for decoding ?

Fine with me.

They do have to map naturally to the codec method encode and
decode, though, so a single method won't do, unless maybe
you add a parameter to define the direction of the coding
process.

In summary, I'd just like to see the following happen:

 * revert the type restrictions on the PyCodec_* API

 * enforce the restrictions on the .encode() and .decode()
  methods of PyUnicode and PyString objects (str and bytes)

 * add a way to PyUnicode and PyString objects (str and bytes)
  to allow same type encoding and decoding

+1

Fine, so we need new methods for PyUnicode and PyString objects
which allow encoding and decoding using the same type (and enforce
the return types).

Any suggestions ?

How about these:

str.str_encode() -> str
str.str_decode() -> str

bytes.bytes_encode() -> bytes
bytes.bytes_decode() -> bytes

Thanks,
--
Marc-Andre Lemburg
eGenix.com

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