[Twisted-Python] Python 2.2 Support

[markw]

Out of interest: Why would someone still running python 2.2 be trying  
to use the *latest* twisted?

Given they are not interested in running the latest and greatest  
python surely they would be happy with an older version of twisted.  
Having a "last version compatible with 2.2" available for download  
would solve this problem no?

mark





On 7 Nov 2005, at 13:47, Jonathan Lange wrote:

> On 06/11/05, Jean-Paul Calderone <exarkun at divmod.com> wrote:
>>> You are confused. At least two people were *for* dropping 2.2  
>>> support
>>> in this thread, and nobody was against it. I'm pretty sure several
>>> others have been for dropping it on IRC, as well.
>>
>> Confused, perhaps.  Or perhaps their positions were voiced with  
>> such limited enthusiasm I just forgot about them :)
>
> My apologies.  I often try to restrain my enthusiasm for fear that
> excess emotion will sidetrack rational discussion.  I am very keen to
> ditch Python 2.2 support.
>
>> It's a pretty good list, I must admit.  But I wonder what the  
>> specific gains to Twisted will be.  Just having a list of things  
>> Python 2.3 can do that Python 2.2 cannot does not seem compelling  
>> to me.
>
> One specific gain already mentioned is that we get to remove a bunch
> of code. Less code means fewer bugs and less work. It might even
> improve our test coverage.
>
> Here's a list of stuff (shamelessly grepped) that could probably be
> simplified if we dropped 2.2 support:
>
> twisted/conch/test/test_filetransfer.py:        # XXX: Remove 'uid'
> and 'gid', because python 2.2 doesn't have os.lchown, so we just skip
> that bit (dodgy!)
> twisted/conch/unix.py:            # XXX: Python 2.2 doesn't have  
> os.lchown!
> twisted/internet/error.py:        # only works in 2.2
> twisted/python/dist.py:    Python 2.2's distutils. Pretty similar
> arguments to getDataFiles,
> twisted/python/dist.py:# Apple distributes a nasty version of Python
> 2.2 w/ all release builds of
> twisted/python/dist.py:    Changes behavior in Python 2.2 to support
> simultaneous specification twisted/python/reflect.py:    This is a
> 2.2-only alternative to the Accessor mixin - just set in your
> twisted/python/zshcomp.py:# in case of python2.2 ...
> twisted/test/test_compat.py:        # without replacing isinstance on
> 2.2 as well :(
> twisted/topfiles/setup.py:# 2.2 doesn't have __file__ in main-scripts.
> twisted/trial/unittest.py:        # only overriding this because
> Python 2.2's unittest has a broken
> twisted/trial/unittest.py:        """a python2.2 friendly test to
> assert that substring is found in astring
> twisted/trial/unittest.py:        """a python2.2 friendly test to
> assert that substring is not found in
> twisted/trial/unittest.py:        # FIXME: when we drop support for
> python 2.2 and start to require 2.3,
> twisted/conch/ssh/filetransfer.py:        isFile, name =
> self.wasAFile[d] # replace with get when we're at 2.3
> twisted/lore/lint.py:# parser.suite in Python 2.3 raises SyntaxError,
> <2.3 raises parser.ParserError
> twisted/scripts/trial.py:        (relative to _trial_temp). Requires
> Python 2.3.3."""
> twisted/spread/jelly.py:            raise
> NotImplementedError("Datetime unserializing not supported in Python <
> 2.3")
> twisted/trial/runner.py:                          "python 2.3 or
> later, not running doctests")
> twisted/trial/runner.py:                          "python 2.3 or
> later, not running doctests")
> twisted/trial/test/test_doctest.py:    skip = 'doctest support only
> works on 2.3 or later'
> twisted/trial/test/test_doctest.py:        # doctest reports failures
> as errors in 2.3
> twisted/trial/test/test_failure_formatting.py:                'doctest
> support only works in Python 2.3 or later')
> twisted/words/protocols/jabber/xmpp_stringprep.py:
> "recommended you upgrade to Python 2.3.2 or newer if you "
>
> Plus the modules in twisted/python/pymodules.
>
> As you can see, Trial carries a fair part of the 2.2 support burden.
> I'm eager to be rid of it.
>
> cheers,
> jml
>
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