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f(**{u, v})
I think a fundamental point is that `**{identifier}` looks like you are applying `**` unpacking to a set, but you actually aren't, it is a special syntactic form. If that disturbs you, I'm not going to say you are wrong.
The special syntactic form doesn't bother me that much. '**dict' is already a syntax error in many places, but allowed in a few other places. I also do not think the purpose served is important enough to warrant a new special form. The actual same conciseness can be achieved with a function that does just a little bit of magic, e.g.: func(**Q(u, v)) Someone linked to a library that apparently does the magic a bit better than my 5-minute version (which required quoting the variable names). I think it was you who complained that sys._getframe() might be CPython specific, which is true. But probably other implementations could do different magic to make their own Q(), so that seems of little importance. I really doubt I'll ever use a magic function like Q()... but the fact that I could have done so for the entire 20+ years that I've used Python tends to emphasize that the need isn't REALLY that huge. And if the need isn't large, reserving new syntax for it isn't compelling. -- Keeping medicines from the bloodstreams of the sick; food from the bellies of the hungry; books from the hands of the uneducated; technology from the underdeveloped; and putting advocates of freedom in prisons. Intellectual property is to the 21st century what the slave trade was to the 16th.