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

[Victor Stinner]

>> type.__setattr__(Three, 'value', 4) changes the value.
>
> Then there is the question of how much craziness you want to protect from.
> Nothing is ever truly private or immutable in CPython, given enough
> motivation and ctypes.

My pysandbox project uses various hacks to secure Python. The attacker
doesn't care of writing pythonic code, (s)he just want to break the
sandbox :-) See my pysandbox project for more information:
https://github.com/haypo/pysandbox/

See sandbox/test/ if you like weird code :-) Tests ensure that the
sandbox is safe.

Constant types would also help optimization, especially PyPy JIT.

Victor