[Python-Dev] versioned .so files for Python 3.2 (original) (raw)

M.-A. Lemburg mal at egenix.com
Tue Sep 7 19:46:25 CEST 2010

"Martin v. Löwis" wrote:

-1 on always using wchart as well. Python's default is UCS2 and the stable ABI should not change that. It's not really Python's default. It is what configure.in does by default. Python's default, on Linux, is UCS-4.

No, the default is UCS2 on all platforms and in configure.in.

configure.in only uses UCS4 if it finds a TCL installation that happens to use UCS4 - for some reason I don't know :-)

However, most Linux distros and more recently also some BSDs have switched over to using UCS4 for their distribution versions of Python.

I also think that this information is not relevant for the stable ABI: Extensions that want to stick to the stable ABI should really not have to know whether PyUNICODE maps to wchart or not. If they want to interface to a local whcart type they can use the conversion APIs we have for that in the Unicode API: PyUnicodeFromWideChar() and PyUnicodeAsWideChar(). Ok. I'm fine with excluding PyUNICODE from the stable ABI. However, I think in the long run, I guess more support for wchart will then be needed in the API, e.g. more convenient argument parsing.

Sure, we could add that.

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