[Python-Dev] PEP 416: Add a frozendict builtin type

[Eli Bendersky]

> > 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...]
>

I agree that this sentence needs some clarification. David's formulation is
also what I would guess it to mean, but it should be stated more explicitly.

Eli
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-dev/attachments/20120229/8d7703cf/attachment.html>