On Dec 5, 2008, at 11:10 AM, [EMAIL PROTECTED] wrote:

>
> i'm asking about SA-related stuff, i know how to handle the python
> side. how to "lock" relations, collections etc - how to make an
> instance readonly?
>
> and eventualy if it is poosible after that to unlock that instance at
> some point - so lock all the user-visible stuff but leave some
> flag "_locked" writable.

you could perhaps override __setattribute__




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