25 Jun
2018
25 Jun
'18
12:40 a.m.
Steven D'Aprano wrote:
You seem to be talking about an implementation which could change in the future. I'm talking semantics of the proposed language feature.
The way I see it, it's not about implementation details, it's about having a mental model that's easy to reason about.
"Comprehensions run in their own scope, like a def or lambda" is a clear and simple mental model. It's easy to explain and keep in your head.
The proposed semantics are much more complicated, and as far as I can see, are only motivated by use cases that you shouldn't really be doing in the first place.
--
Greg