[Python-3000] [Python-Dev] Stabilizing the C API of 2.6 and 3.0 (original) (raw)
Nick Coghlan ncoghlan at gmail.com
Fri May 30 00:57:07 CEST 2008
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M.-A. Lemburg wrote:
* Why can't we have both PyString and PyBytes exposed in 2.x, with one redirecting to the other ?
We do have that - the PyString_* names still work perfectly fine in 2.x. They just won't be used in the Python core codebase anymore - everything in the Python core will use either PyBytes_* or PyUnicode_* regardless of which branch (2.x or 3.x) you're working on. I think that's a good thing for ease of maintenance in the future, even if it takes people a while to get their heads around it right now.
* Why should the 2.x code base turn to hacks, just because 3.x wants to restructure itself ?
With the better explanation from Greg of what the checked in approach achieves (i.e. preserving exact ABI compatibility for PyString_*, while allowing PyBytes_* to be used at the source code level), I don't see what has been done as being any more of a hack than the possibly more common "#define " (which would break binary compatibility).
The only things that I think would tidy it up further would be to:
- include an explanation of the approach and its effects on API and ABI backward and forward compatibility within 2.x and between 2.x and 3.x in stringobject.h
- expose the PyBytes_* functions to the linker in 2.6 as well as 3.0
Cheers, Nick.
-- Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
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