96     PyObject *pi_factory;  member
126     Py_CLEAR(st->pi_factory);  in elementtree_clear()
138     Py_VISIT(st->pi_factory);  in elementtree_traverse()
2342     PyObject *pi_factory;  member
2377         t->pi_factory = NULL;  in treebuilder_new()
2412                                        PyObject *pi_factory,  in _elementtree_TreeBuilder___init___impl()  argument
2436     if (pi_factory == Py_None) {  in _elementtree_TreeBuilder___init___impl()
2438         pi_factory = st->pi_factory;  in _elementtree_TreeBuilder___init___impl()
2440     if (pi_factory) {  in _elementtree_TreeBuilder___init___impl()
2441         Py_INCREF(pi_factory);  in _elementtree_TreeBuilder___init___impl()
2442         Py_XSETREF(self->pi_factory, pi_factory);  in _elementtree_TreeBuilder___init___impl()
2445         Py_CLEAR(self->pi_factory);  in _elementtree_TreeBuilder___init___impl()
2468     Py_VISIT(self->pi_factory);  in treebuilder_gc_traverse()
2489     Py_CLEAR(self->pi_factory);  in treebuilder_gc_clear()
2521                                  PyObject *pi_factory)  in _elementtree__set_factories_impl()  argument
2532     if (!PyCallable_Check(pi_factory) && pi_factory != Py_None) {  in _elementtree__set_factories_impl()
2534                      Py_TYPE(pi_factory)->tp_name);  in _elementtree__set_factories_impl()
2540         st->pi_factory ? st->pi_factory : Py_None);  in _elementtree__set_factories_impl()
2548     if (pi_factory == Py_None) {  in _elementtree__set_factories_impl()
2549         Py_CLEAR(st->pi_factory);  in _elementtree__set_factories_impl()
2551         Py_INCREF(pi_factory);  in _elementtree__set_factories_impl()
2552         Py_XSETREF(st->pi_factory, pi_factory);  in _elementtree__set_factories_impl()
2867     if (self->pi_factory) {  in treebuilder_handle_pi()
2868         pi = _PyObject_FastCall(self->pi_factory, stack, 2);  in treebuilder_handle_pi()