Type/class unification and new-style classes
- New-style classes are now always dynamic (except for built-in and
- extension types). There was no longer a performance penalty, and I
+ extension types). There is no longer a performance penalty, and I
no longer see another reason to keep this baggage around. One relic
- remains: the __dict__ or a new-style class is a read-only proxy.
- You must set the class's attribute to modify. As a consequence, the
+ remains: the __dict__ of a new-style class is a read-only proxy; you
+ must set the class's attribute to modify it. As a consequence, the
__defined__ attribute of new-style types no longer exists, for lack
of need: there is once again only one __dict__ (although in the
- future a __cache__ may be resurrected in its place).
+ future a __cache__ may be resurrected with a similar function, if I
+ can prove that it actually speeds things up).
- C.__doc__ now works as expected for new-style classes (in 2.2a4 it
always returned None, even when there was a class docstring).