shangyu wrote: > Hi dear all, > I have following Python code > class mydict(dict): > def __init__(self): > pass > I wonder how this new type get created . What is the type of metatype in > the following line ? type = (PyTypeObject *)metatype->tp_alloc(metatype, > nslots); (line 2296 of typeobject.c Python2.7.3 source code) > It seems PyDict_Type . If so , how do I expect the tp_alloc will return a > PyTypeObject object ? Maybe I've missed something ? Many thanks!!!
> I think I've found it out . For new-style class it's PyType_Type and for > old-style class it's PyClass_Type . Thanks anyway. Yes. You can find that out without resorting to the C API: >>> class A(dict): pass ... >>> type(A) <type 'type'> A fancy example: >>> import abc >>> class B: ... __metaclass__ = abc.ABCMeta ... >>> type(B) <class 'abc.ABCMeta'> -- http://mail.python.org/mailman/listinfo/python-list