On Wed, 2012-02-29 at 19:21 +0100, Victor Stinner wrote: > As requested, I create a PEP and a related issue: > > http://www.python.org/dev/peps/pep-0416/
[...snip...] > > Rationale > ========= > > A frozendict mapping cannot be changed, but its values can be mutable > (not hashable). A frozendict is hashable and so immutable if all > values are hashable (immutable). The wording of the above seems very unclear to me. Do you mean "A frozendict has a constant set of keys, and for every key, d[key] has a specific value for the lifetime of the frozendict. However, these values *may* be mutable. The frozendict is hashable iff all of the values are hashable." ? (or somesuch) [...snip...] > * Register frozendict has a collections.abc.Mapping s/has/as/ ? [...snip...] > If frozendict is used to harden Python (security purpose), it must be > implemented in C. A type implemented in C is also faster. You mention security purposes here, but this isn't mentioned in the Rationale or Use Cases Hope this is helpful Dave _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
