[Python-ideas] Support other dict types for type.__dict__

[Yury Selivanov]

On 2012-02-24, at 9:29 PM, Victor Stinner wrote:

> Hum, after thinking twice, using a "frozendict" for type.__dict__ is
> maybe overkill for my needs (and intrused as noticed Nick). Attached
> patch for Python 3.3 is a simpler approach: add __final__ special
> value for class. If this variable is present, the type is constant.
> Example:
> ---
> class Test:
>   __final__=True
>   x = 1

-1 on this.  The next move would be adding friend classes and protected methods ;)
__setattr__ works perfectly for those purposes.  Moreover, you can emulate 
your idea on unpatched python by using metaclasses.

-
Yury