Policy for versions of system python
Hello, CPython source code currently contains a number of python scripts (e.g Python/makeopcodetargets.py, Objects/typeslots.py, Parser/asdl_c.py) that are used during the build of the python interpreter itself. For this reason they are run with system installed python. What is the policy regarding the range of python versions that they should support? I looked at some of the scripts and they seem to support both 2 and 3, starting from at most 2.4. Python/makeopcodetargets.py says at the top: # This code should stay compatible with Python 2.3, at least while # some of the buildbots have Python 2.3 as their system Python. Is this the official minimal version or do we have this spelled out more explicitly somewhere? Eugene
2011/4/4 Eugene Toder <eltoder@gmail.com>:
Hello,
CPython source code currently contains a number of python scripts (e.g Python/makeopcodetargets.py, Objects/typeslots.py, Parser/asdl_c.py) that are used during the build of the python interpreter itself. For this reason they are run with system installed python. What is the policy regarding the range of python versions that they should support?
I looked at some of the scripts and they seem to support both 2 and 3, starting from at most 2.4. Python/makeopcodetargets.py says at the top: # This code should stay compatible with Python 2.3, at least while # some of the buildbots have Python 2.3 as their system Python. Is this the official minimal version or do we have this spelled out more explicitly somewhere?
Normally PEP291 lists the packages which should remain compatible with previous versions of Python: http://www.python.org/dev/peps/pep-0291/ makeopcodetargets.py is not mentioned there, though. -- Amaury Forgeot d'Arc
On Mon, 4 Apr 2011 19:11:52 +0200 "Amaury Forgeot d'Arc" <amauryfa@gmail.com> wrote:
2011/4/4 Eugene Toder <eltoder@gmail.com>:
Hello,
CPython source code currently contains a number of python scripts (e.g Python/makeopcodetargets.py, Objects/typeslots.py, Parser/asdl_c.py) that are used during the build of the python interpreter itself. For this reason they are run with system installed python. What is the policy regarding the range of python versions that they should support?
I looked at some of the scripts and they seem to support both 2 and 3, starting from at most 2.4. Python/makeopcodetargets.py says at the top: # This code should stay compatible with Python 2.3, at least while # some of the buildbots have Python 2.3 as their system Python. Is this the official minimal version or do we have this spelled out more explicitly somewhere?
Normally PEP291 lists the packages which should remain compatible with previous versions of Python: http://www.python.org/dev/peps/pep-0291/
That's quite orthogonal. PEP 291 is about public stdlib modules, not build scripts. Furthermore, “this PEP has no bearing on the Python 3 standard library”. To answer Eugene's question, there's no official policy but the comment at the top of Python/makeopcodetargets.py can indeed serve as an useful guideline. I wonder if we still have buildbots with 2.3 as the system Python, by the way. Regards Antoine.
In article <20110404191949.07e13129@pitrou.net>, Antoine Pitrou <solipsis@pitrou.net> wrote:
To answer Eugene's question, there's no official policy but the comment at the top of Python/makeopcodetargets.py can indeed serve as an useful guideline. I wonder if we still have buildbots with 2.3 as the system Python, by the way.
The system Python on Mac OS X 10.4 (Tiger) is Python 2.3. For 10.5 (Leopard) it's 2.5. 10.6 (Snow Leopard) has both 2.6 and 2.5. -- Ned Deily, nad@acm.org
participants (4)
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Amaury Forgeot d'Arc -
Antoine Pitrou -
Eugene Toder -
Ned Deily