P.S. I quite liked the initial "expr as name" version with subscopes, but those aspects were changed based on reasonable concerns raised on python-ideas, and I think the discussion of the simplified proposal on python-dev has also raised sufficient further concerns to push the whole concept back into python-ideas territory. (I do think the discussions have clarified the nature of the cases where the current lack of any form of inline binding support can be genuinely irritating, though)