Message 316433 - Python tracker
tp_del still undocumented. In my opinion, tp_del corresponds to the __del__() method of classes, because there are no other variable correspondes to it, but methods using for creating(tp_new) and initializing(tp_init) an object are not. Although __del__ method have some issue according to the offical document, but it is exist, so there must have a pointer to the function corresponding to it.