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[Python-Dev] Tricky way of of creating a generator via a comprehension expression

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On 25 November 2017 at 01:22, Guido van Rossum <guido at python.org> wrote:

> The more I hear about this topic, the more I think that `await`, `yield`
> and `yield from` should all be banned from occurring in all comprehensions
> and generator expressions. That's not much different from disallowing
> `return` or `break`.
>
>
IIUC this would essentially mean rejecting PEP 530.
What do you think about banning `await`, `yield` and `yield from` only from
generator expressions?
Comprehensions can be fixed (just make them equivalent to for-loops without
leaks as discussed).

--
Ivan
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