On Aug 10, 4:25 pm, Ian Kelly <ian.g.ke...@gmail.com> wrote: > On Wed, Aug 10, 2011 at 8:48 AM, Fuzzyman <fuzzy...@gmail.com> wrote: > > __name__ can be a descriptor, so you just need to write a descriptor > > that can be fetched from classes as well as instances. > > > Here's an example with a property (instance only): > > >>>> class Foo(object): > > ... @property > > ... def __name__(self): > > ... return 'bar' > > ... > >>>> Foo().__name__ > > 'bar' > > But: > > >>> Foo.__name__ > 'Foo'
That's why I said "you just need to _write_ a descriptor that can be fetched from classes as well as instances". The example with property was to show that it *could* be a descriptor. You can write descriptors with custom behaviour when fetched from a class. However it turns out that you're right and I'm wrong; __name__ is special: >>> class descriptor(object): ... def __get__(*args): ... return 'bar' ... >>> class Foo(object): ... __name__ = descriptor() ... >>> Foo.__name__ 'Foo' >>> Foo().__name__ 'bar' >>> class Foo(object): ... name = descriptor() ... >>> Foo.name 'bar' As Eric points out in his original slot, types have their __name__ slot filled in with a string in typeobject.c All the best, Michael -- http://voidspace.org.uk/ -- http://mail.python.org/mailman/listinfo/python-list
