So the way I envision it is that *in the absence of a nonlocal or global > declaration in the containing scope*, := inside a comprehension or genexpr > causes the compiler to assign to a local in the containing scope, which is > elevated to a cell (if it isn't already). If there is an explicit nonlocal > or global declaration in the containing scope, that is honored. >
This seems to be getting awfully complicated. Proof? Try to write the docs for the proposed semantics. I don't understand why we went so astray from the original requirements, which could all be met by having `if` and `while` accept `as` to bind an expression to a variable that would be local to the structured statement. Cheers, -- Juancarlo *Añez*
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