[Zope] adding properties trough pythonscript

[Sean Hastings]

>
> I've seen a few cases where the following happens,
> * A new story comes into the system from the feeds subsystem.
>
> * The feeds subsystem sends a "new content" message the event channel.
>
> * The event channel invokes  page creation subsystem creates a new
> page. (doing a little "self._setObject( id, page );page = self._getOb(
> id )" dance to get a wrapped object instance and at that point altering
> the persistent state)
>
> * The page creation system then starts adding items to the page. One of
> them throws an exception, that is caught in the event channel that
> invoked it.
>
> The end result is a page that is missing some of its critical
> components.
>

And this is not just a case where the missing components would have been
added after the point in the control flow where the Exception was thrown,
but before it was caught?