[Python-3000] Bytes and unicode conversion in C extensions

[Nick Coghlan]

Christian Heimes wrote:
> Jesus Cea wrote:
>> Current pybsddb code don't allow subclassing or adding new attibutes to
>> a given instance. I will (probably) work on this for a future pybsddb
>> version. Pointers to references to do this kind of magic welcomed :-)
> 
> For making it subclass-able you have to add Py_TPFLAGS_BASETYPE to the
> type flags. In order to make new attributes possible you either need to
> mess around with tp_dict or tp_dictoffset. Grepping for
> _PyObject_GetDictPtr should give you some hints.

There's no real reason to do the latter though - none of the builtin
Python types permit it since once you make the class subclassable, it's
fairly easy for people to add the facility for themselves (as a standard
Python class, the subclass gets a __dict__ attribute automatically).

Cheers,
Nick.

-- 
Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia
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