Steven D'Aprano wrote:
Well, that is a surprise, but I don't think that is intended behaviour. I think that's something which only works by accident. The intention is that __class__ returns the instance's type, not arbitrary values.
Well, a proxy object would obviously return a suitable class-like object. I was just demonstrating that it's possible to override what __class__ returns. I don't think it's an accident, because the weakref module uses this for its proxy objects. >>> import weakref >>> class C(object): ... pass ... >>> c = C() >>> p = weakref.proxy(c) >>> p.__class__ <class '__main__.C'> >>> type(p) <type 'weakproxy'>
If you try to set it to a non-class on the instance, it fails:
For proxying purposes you don't need to be able to set it, but I don't see why you couldn't use a property setter to override that behaviour as well if you really wanted to. -- Greg -- https://mail.python.org/mailman/listinfo/python-list
