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From: Random832 <random832@fastmail.com>
Newsgroups: comp.lang.python
Subject: Re: how to get names of attributes
Date: Wed, 30 Dec 2015 12:04:43 -0500
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On Wed, Dec 30, 2015, at 07:50, Chris Angelico wrote:
> I believe that's true, yes. The meaning of "by default" there is that
> "class X: pass" will make an old-style class. All built-in types are
> now new-style classes.

To be clear, AFAIK, built-in types were never old-style classes - prior
to the introduction of the new type system (i.e. in Python 2.1 and
earlier) they were not classes, and afterwards they were immediately
new-style classes.