On Thu, May 27, 2021 at 1:40 PM Matt del Valle <matthew...@gmail.com> wrote:
> ... Oh, and I think I've just discovered another thing that I'm not 100% sure I > like. Even putting aside that I'm not a fan of decorators on the same line > as the statement they are decorating (as I mentioned in an earlier > response), you've got examples of variable decorators where no assignment > is happening such as: > > @decorator var > > To me this breaks the symmetry between function decorators, which always > decorate a function definition (an implicit form of assignment), and the > proposed variable decorators. > > They are also confusing in the sense that the decorator is de-facto > turning an otherwise invalid python statement legal. If you remove the > decorator from the above example you will presumably get a `NameError`. > > I imagine this would then have to be special-cased somehow in the language > spec so that an undefined name is not evaluated, but only when preceded by > a decorator? I don't know, it seems messy to me. > > Also, I just can't quite see the value in them if I'm honest, whereas the > version that is applied to an assignment statement: > > @decorator var: bool = True > > And even a bare type-hint version: > > @decorator var: bool > > seem to me to be far more self-evidently useful. > Ok, agreed on all points. I think an eventual full-fledged proposal could easily put naked decorations like: @decorator var ...to the wayside, to be added later if people have a really good reason for it. --- Ricky. "I've never met a Kentucky man who wasn't either thinking about going home or actually going home." - Happy Chandler
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