static int
has_ufunc_attr(PyObject * obj) {
/* attribute check is expensive for scalar operations, avoid if possible */
if (PyArray_CheckExact(obj) || _is_basic_python_type(obj)) {
return 0;
}
else {
return PyObject_HasAttrString(obj, "__numpy_ufunc__");
}
}
/*
* PyArray_GetAttrString_SuppressException:
*
* Stripped down version of PyObject_GetAttrString,
* avoids lookups for None, tuple, and List objects,
* and doesn't create a PyErr since this code ignores it.
*
* This can be much faster then PyObject_GetAttrString where
* exceptions are not used by caller.
*
* 'obj' is the object to search for attribute.
*
* 'name' is the attribute to search for.
*
* Returns attribute value on success, 0 on failure.
*/
PyObject *
PyArray_GetAttrString_SuppressException(PyObject *obj, char *name)
{
PyTypeObject *tp = Py_TYPE(obj);
PyObject *res = (PyObject *)NULL;
/* We do not need to check for special attributes on trivial types */
if (_is_basic_python_type(obj)) {
return NULL;
}
/* Attribute referenced by (char *)name */
if (tp->tp_getattr != NULL) {
res = (*tp->tp_getattr)(obj, name);
if (res == NULL) {
PyErr_Clear();
}
}
/* Attribute referenced by (PyObject *)name */
else if (tp->tp_getattro != NULL) {
#if defined(NPY_PY3K)
PyObject *w = PyUnicode_InternFromString(name);
#else
PyObject *w = PyString_InternFromString(name);
#endif
if (w == NULL) {
return (PyObject *)NULL;
}
res = (*tp->tp_getattro)(obj, w);
Py_DECREF(w);
if (res == NULL) {
PyErr_Clear();
}
}
return res;
}
