On 10Oct2018 20:25, Philip Martin <philip.martin2...@gmail.com> wrote:
Steven, that's a great idea, and I would be 100% up for your suggestion to
have types.MappingProxyType renamed to frozendict.

I'm not for the rename, myself. Though I'd not be against a frozendict factory in builtins, a tiny shim for MappingProxyType.

However, the differences
in the behavior of MappingProxyType's constructor versus dict's would make
the API's behavior confusing IMO. For example, MappingProxyType(x=5, y=10)
throws a TypeError. I don't think most people would expect this.

Well, if it were called frozendict, indeed not. It should act like dict.

So:

 def frozendict(**kw):
     return MappingProxyType(kw)

You could make an argument for that (or a slightly heftier version accepting the various things dict accepts). Or... you could just keep such a thing in your personal kit as a trivial way to spell "frozendict". One could argue for the above as a nice example to live in the docs perhaps.

But not everything needs a special name.

Cheers,
Cameron Simpson <c...@cskk.id.au>
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