[Python-Dev] Let's update CObject API so it is safe and regular!
greg.ewing at canterbury.ac.nz
Thu Apr 2 13:28:34 CEST 2009
Jim Fulton wrote:
> The only type-safety mechanism for a CObject is it's identity. If you
> want to make sure you're using the foomodule api, make sure the address
> of the CObject is the same as the address of the api object exported by
> the module.
I don't follow that. If you already have the address of the
thing you want to use, you don't need a CObject.
> 2. Only code provided by the module provider should be accessing the
> CObject exported by the module.
Not following that either. Without attaching some kind of
metadata to a CObject, I don't see how you can know whether
a CObject passed to you from Python code is one that you
created yourself, or by some other unrelated piece of
Attaching some kind of type info to a CObject and having
an easy way of checking it makes sense to me. If the
existing CObject API can't be changed, maybe a new
enhanced one could be added.
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