[Python-Dev] Tricky way of of creating a generator via a comprehension expression (original) (raw)

Ivan Levkivskyi levkivskyi at gmail.com
Fri Nov 24 20:04:38 EST 2017

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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).

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