* Guido van Rossum wrote:
On Thu, Mar 1, 2012 at 9:44 AM, Victor Stinner <victor.stinner@gmail.com> wrote:
frozendict would help pysandbox but also any security Python module, not security, but also (many) other use cases ;-)
Well, let's focus on the other use cases, because to me the sandbox use case is too controversial (never mind how confident you are :-).
I like thinking through the cache use case a bit more, since this is a common pattern. But I think it would be sufficient there to prevent accidental modification, so it should be sufficient to have a dict subclass that overrides the various mutating methods: __setitem__, __delitem__, pop(), popitem(), clear(), setdefault(), update().
For the caching part, simply making the dictproxy type public would already help a lot.
What other use cases are there?
dicts as keys or as set members. I do run into this from time to time and always get tuple(sorted(items()) or something like that. nd -- s s^saaaaaoaaaoaaaaooooaaoaaaomaaaa a alataa aaoat a a a maoaa a laoata a oia a o a m a o alaoooat aaool aaoaa matooololaaatoto aaa o a o ms;s;\s;s;g;y;s;:;s;y#mailto: # \51/\134\137| http://www.perlig.de #;print;# > nd@perlig.de