On Tue, Mar 27, 2018 at 6:56 AM, Nick Coghlan <ncogh...@gmail.com> wrote:
> [...] The implicit functions used in the > comprehension & generator expression cases are just potentially > simpler to handle, as we don't care about their API signatures, which > means we can freely pollute their APIs with eager name bindings if we > choose to do so. [...] > Hm, so maybe we shouldn't touch lambda, but we can at least fix the scope issues for comprehensions and genexprs. There may still be breakage, when the code defines a global x that is overridden by a class-level x, and a class-level comprehension references x assuming it to be the global. So we need to tread carefully even here -- but this case is weird already: x = 42 class C: x = [1, 2, 3] z = [x+y for y in x] # [43, 44, 45] -- --Guido van Rossum (python.org/~guido)
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