[Python-Dev] Add a frozendict builtin type

[Raymond Hettinger]

On Feb 29, 2012, at 3:52 PM, Victor Stinner wrote:

> I don't know if hardening Python is a compelling argument to add a new
> builtin type.

It isn't.  

Builtins are for general purpose use.
It is not something most people should use;
however, if it is a builtin, people will be drawn 
to frozendicts like moths to a flame.   
The tuple-as-frozenlist anti-pattern shows
what we're up against.

Another thought:  if pypy is successful at providing sandboxing,
the need for sandboxing in CPython is substantially abated.


Raymond

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