On Thu, Feb 18, 2021 at 1:59 PM Ben Rudiak-Gould <benrud...@gmail.com> wrote: > > On Wed, Feb 17, 2021 at 6:12 PM Chris Angelico <ros...@gmail.com> wrote: >> >> But if object() could get arbitrary attributes, then __slots__ wouldn't work. > > > It seems to me that all you'd have to do is add a line or two to the add_dict > logic in type_new so that instances of object get a dict. Then instances of > object would get a dict, and nothing else would change. > > In languages like C++ where an instance of a class contains actual in-memory > instances of all of its superclasses, that wouldn't work. In Python, where > instances of different classes have a priori nothing to do with each other, I > think it would work. >
Even if it's possible, though, it's a fairly significant breach of Liskov. And I don't know that other Python implementations would be able to do this so cleanly. What's so hard about using a different type? Especially since the vanilla object repr is basically useless, but SimpleNamespace can tell you what it's carrying. Orthogonal point: SimpleNamespace could easily be made JSON-serializable (as a dict), if that would be of value. ChrisA _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/MD6ZZW6GYKJXI6VNWRJ6HU4RAT44UANK/ Code of Conduct: http://python.org/psf/codeofconduct/
