[Python-Dev] Add a frozendict builtin type (original) (raw)

André Malo nd at perlig.de
Thu Mar 1 14:26:46 CET 2012

On Thursday 01 March 2012 14:07:10 Victor Stinner wrote:

> Here are my real-world use cases. Not for security, but for safety and > performance reasons (I've built by own RODict and ROList modeled after > dictproxy): > > - Global, but immutable containers, e.g. as class members

I attached typefinal.patch to the issue #14162 to demonstrate how frozendict can be used to implement a "read-only" type. Last version: http://bugs.python.org/file24696/typefinal.patch

Oh, hmm. I rather meant something like that:

""" class Foo: some_mapping = frozendict( blah=1, blub=2 )

or as a variant:

def zonk(some_default=frozendict(...)): ...

or simply a global object:

baz = frozendict(some_immutable_mapping) """

I'm not sure about your final types. I'm using slots = () for such things (?)

nd

More information about the Python-Dev mailing list