[Zope-dev] Optional C extensions

[Lennart Regebro]

On Thu, Mar 11, 2010 at 00:46, Jim Fulton <jim at zope.com> wrote:
> On Wed, Mar 10, 2010 at 7:17 AM, Tim Hoffman <zutesmog at gmail.com> wrote:
> ...
>> Unfortunately I needed deferredimport and was completely unsure how
>> else to proceed at the time.
>> I use code generation for gae based models, and the unfortunately
>> reference entities need actual models/classes which means you can very
>> easily create
>> cyclic dependancies.  Storm allows references to be defined "strings"
>> such as "model.MyClass"  but gae doesn't implement such a thing,
>> so deferredimport was the next best thing.
>
> I thought about this a bit and realized that I could implement
> deferred import without using proxies. I don't know why I didn't think
> of this before.
>
> Then I looked at the "Importing" project, which provides the
> peak.util.imports package:
>
>  http://peak.telecommunity.com/DevCenter/Importing
>
> This looks like a good alternative to zope.deferredimport.  Maybe we
> should deprecate zope.deferredimport in favor of Importing.  If there
> are interesting things that depend on zope.deferredimport that we
> don't want to update, we could reimplement zope.deferredimport using
> Importing.

+1 for Not Invented Here things.

-- 
Lennart Regebro: Python, Zope, Plone, Grok
http://regebro.wordpress.com/
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