[Python-Dev] Tricky way of of creating a generator via a comprehension expression (original) (raw)
Yury Selivanov yselivanov.ml at gmail.com
Wed Nov 22 11:58:08 EST 2017
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On Wed, Nov 22, 2017 at 11:11 AM, Paul Moore <p.f.moore at gmail.com> wrote: [..]
But by the logic you just described, await isn't (or shouldn't be) allowed, surely?
No, that's a stretch. People can understand and actually use 'yield (await foo())', but they usually can't figure what 'yield (yield foo())' actually does:
def foo(): yield (yield 1)
Who on this mailing list can meaningfully use the 'foo()' generator?
async def bar(): yield (await foo())
'bar()' is perfectly usable in an 'async for' statement and it's easy to understand what it does if you spend an hour writing async/await code.
Yury
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