FEEDBACK WANTED: Type/class unification

Christian Tanzer tanzer at
Wed Aug 1 18:47:15 CEST 2001

> When I released Python 2.2a1, the type/class unification feature was
> announced as TENTATIVE.  It's been a while now (feels like a year,
> although I realize it's only been 10 days :), and I would like to see
> some feedback on this.
> If there's anyone who believes the type/class unification should not
> become a feature in Python 2.2, please speak up now or forever hold
> your peace...  (But I'd rather you speak up!)

Nice work!

I hope it'll go into 2.2.

> I realize the PEPs aren't done yet, but I believe that the separate
> introduction I wrote goes a long way towards explaining type/class
> unification.  Read it here:
> Any questions, don't hesitate to ask.

You mention that the mro-list will be constructed at class definition
time. Does that mean that changes to `__bases__` are going to be
outlawed? Playing tricks with __bases__ was sometimes handy.

Do you have a name for the new lookup rule?

Christian Tanzer                                         tanzer at
Glasauergasse 32                                       Tel: +43 1 876 62 36
A-1130 Vienna, Austria                                 Fax: +43 1 877 66 92

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