[Zope3-dev] Python version for Zope 3.4 ?

[Martijn Faassen]

Jeff Shell wrote:
> On 9/28/06, Martijn Faassen <faassen at infrae.com> wrote:
>> Jim Fulton wrote:
>>> Baiju M wrote:
>>>> Hi, What is the target Python version for Zope 3.4, is it
>>>> Python 2.5?
>>> 
>>> That's a good question.  I fear it will take a fair bit of work
>>> to get to it and, frankly for me there are higher priorities.
>> 
>> I think we'd be okay in not supporting Python 2.5 yet for this
>> release. Python 2.5 has just been released, and the 9 months or so
>> will give it time to gell out, Python extensions a bit of time to
>> catch up with the newer version, and for us to do some
>> experimenting. Linux distributions will likely still be supporting
>> Python 2.4 (along with 2.5) at that stage as well.
> 
> Are you talking not-supporting Python 2.5 at all? Or just not wanting
> to require it?

I'm talking about not supporting it at all. As I just posted elsethread,
I do not think we should spare the development resources to make this
work. It's a lots of added overhead to the process.

> If Zope 3 can't at least run on Python 2.5 within three months of
> Python 2.5's release, I don't think that looks good for us. I would
> hope that by being more "Pythonic" and free from the old
> ExtensionClass magic - especially in Zope 3 - that Zope could keep
> better pace with Python. But nine months? A year? Can I expect the
> developers of toolkits we use, in some cases more heavily than Zope 
> itself, like SQLAlchemy to hold off on requiring Python 2.5 for that
> long?

I don't know. All I know is we can't spare the resources to support 
both. Either we go for Python 2.5 completely or we don't at all this 
release cycle. I must also note that many Linux distributions also have 
half-year or longer packaging cycles. The new Ubuntu is surely not going 
to have much Python 2.5 in it.

>> So unless a volunteer steps up to do lots of hard work between now
>> and march next year, let's stick with Python 2.4. Otherwise let's
>> plan it in for Zope 3.5 and Zope 2.12
> 
> I really really really hope it doesn't take that long to be able to
> at least run on Python 2.5: even if it has to be with some caveats or
> mild warnings.

If it works that way without the core developers having to do any 
additional work, then your wish may become true. That's a far cry from 
official support, though.

> If security and restricted python / security proxies are the main
> issue, what about if one is running Zope sites with absolutely ZERO
> through the web code - no page templates, nothing - can't there be a
> lighter weight security implementation that wouldn't take half a year
> of "lots of hard work"?

It's going to be a significant investment of work to make sure 
everything works with Python 2.5. Either someone credible steps up, 
convinces us, and does the work, and we all move over to Python 2.5. If 
they don't, we do it the next cycle.

Regards,

Martijn