> I'd like to remove all doubt: {**d1} needs to work regardless of the key
> type, as long as it's hashable (d1 could be some mapping implemented without
> hashing, e.g. using a balanced tree, so that it could support unhashable
> keys).
>
> If there's doubt about this anywhere, we could add an example to the docs and
> to the PEP.
On a related note: **kwargs, should they support arbitrary strings as keys? I
depend on this behavior in production code and all python implementations
handle it.
/ Anders
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