[Python-Dev] Extending types in C - help needed

[Thomas Heller]

> Also notice that this *does* make use of new-style classes: In 2.1,
> types did not have a tp_dict slot. Of course, the PyType_Ready call
> should go immediately before the place where tp_dict is accessed, and
> a check should be added whether tp_flags contains
> Py_TPFLAGS_HAVE_CLASS.
Wouldn't it suffice to check for tp_dict != NULL (after the call
to PyType_Ready of course)?

Hm. What does Py_TPFLAGS_HAVE_CLASS mean exactly?
Or, better, since TPFLAGS_DEFAULT contains TPFLAGS_HAVE_CLASS,
what does it mean when Py_TPFLAGS_HAVE_CLASS is NOT in tp_flags?
Does it mean that this is a 'new style' type object?

Thomas