#include <Python.h>

void testfunc(PyObject *self, PyObject *args)
{
	PyObject *obj;

	if (!PyArg_ParseTuple(args, "O", &obj))
		return NULL;

	PyStringObject *x;
	printf("A\n");
	x = PyObject_GetAttrString(obj, "x");
	printf("B %s\n",x->ob_sval);
	PyErr_Print();
}

static PyMethodDef testMethods[] = {
		{"myfunc", (PyCFunction)testfunc, METH_VARARGS, "."},
		{NULL, NULL},
};

PyMODINIT_FUNC

inittestmod(void)
{
	(void) Py_InitModule("testmod", testMethods);
}
-------------------------
import new
import testmod

class Something(object):
        def __init__(self):
                self.func = new.instancemethod(testmod.myfunc, self, self.__class__)
                self.x = 'something'


#Something.func = testmod.myfunc
a = Something()
print "Value returned should be:",a.x
#testmod.myfunc(a)
a.func()
------------------------
Value returned should be: something
A
B something