Magic methods in extension types

[Michael Hudson]

Jacek Generowicz <jacek.generowicz at cern.ch> writes:

> I am writing an extension type, and wish to add some magic methods
> which are not catered for by the tp_<whatever> slots (eg tp_init ->
> __init__) in PyTypeObject. My methods seem to work correctly when
> invoked explicitly (eg obj.__iadd__(3)) but the method seems not to be
> associated with the corresponding operator (ie obj += 3 does NOT
> work).
> 
> What am I likely to be doing wrong ?

Not finding the tp_as_number->nb_inplace_add field?

I think *all* magic methods correspond to slots in (or near) the type
object -- it's practically the definition of "magic method"!

Cheers,
mwh

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