[Python-Dev] Maintaining old releases (original) (raw)
M.-A. Lemburg mal at egenix.com
Wed Aug 13 12:56:06 CEST 2008
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On 2008-08-13 04:57, Guido van Rossum wrote:
And there's a reason for this slow uptake of Python 2.5: as more and more servers run 64-bit OSes, the Pyssizet changes cause serious trouble with Python C extensions that were not updated by their authors. I'm not sure what that has to do with anything. The older releases have worse support for 64-bit platforms!
This is one of the reasons why porting applications from 2.4 to 2.5 takes longer than e.g. moving from 2.3 to 2.4.
Python 2.4 works just fine on 64-bit platforms and so do the C extensions that were written for it. Moving to 2.5 you often find that those C extensions do not support the new Py_ssize_t types and thus generate segfaults.
As a result, you either have to start using a different C extension, patch the extension, stay with Python 2.4 or use a custom Python interpreter that is patched always map Py_ssize_t to int.
The move from 2.5 to 2.6 will be a lot easier and uptake a lot faster.
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