[Python-Dev] Caching function pointers in type objects

[Benjamin Peterson]

2010/3/2 Daniel Stutzbach <daniel at stutzbachenterprises.com>:
> In CPython, is it safe to cache function pointers that are in type objects?
>
> For example, if I know that some_type->tp_richcompare is non-NULL, and I
> call it (which may execute arbitrary user code), can I assume that
> some_type->tp_richcompare is still non-NULL?

Not unless it's builtin. Somebody could have deleted the rich
comparison methods.



-- 
Regards,
Benjamin