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

Antoine Pitrou solipsis at pitrou.net
Thu Nov 23 06:49:28 EST 2017


On Thu, 23 Nov 2017 12:39:46 +0100 Ivan Levkivskyi <levkivskyi at gmail.com> wrote:

Also I think it makes sense to keep discussion in one place, i.e. either here xor at https://bugs.python.org/issue10544

The bug tracker can be used for implementation discussions, but general language design decisions (such as whether to allow or not a certain construct) should take place on python-dev.

I'm still in favour of deprecating and then disallowing. Nobody seems to have presented a real-world use case that is made significantly easier by trying to "fix" the current behaviour (as opposed to spelling the loop explicitly). I do asynchronous programming using "yield" every day in may job (because of compatibility requirements with Python 2) and I've never had once the need to write a "yield" inside a comprehension or generator expression.

Regards

Antoine.



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