How to check if PyObject* points to the type numpy.uint8

Question

How do I use the Python C-API to check if a PyObject* points to the type numpy.uint8 etc?

(Note that I want to check if the PyObject* points to the type numpy.uint8, not if it points to an instance of the type numpy.uint8.)

brennie · Accepted Answer · 2011-07-27T23:06:43.167

1

You can use PyType_IsSubtype(child, parent) to see if the child type inherits the parent, but it operates on PyTypeObject*, not PyObject*.

edited Jul 27 '11 at 23:06

answered Jul 27 '11 at 23:01

brennie

And how do I get the PyTypeObject* for numpy.uint8? – Johan Råde Jul 28 '11 at 05:00
1

If you have an instance of numpy.uint8, you can access it via `object->ob_type`, but other than that, I don't know. I imagine you could get the `numpy` module it from the globals dict (via `PyEval_GetGlobals()`) and then access `numpy.uint8` from there, but I'm not sure on the exact method. – brennie Jul 29 '11 at 05:13

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