[Python-Dev] The `for y in [x]` idiom in comprehensions

Nikolaus Rath Nikolaus at rath.org
Sun Feb 25 07:02:26 EST 2018
On Feb 22 2018, Serhiy Storchaka <storchaka at gmail.com> wrote:
> 1. Inner generator expression:
>
>     result = [y + g(y) for y in (f(x) for x in range(10))]
>
[...]
>
> And maybe there are other ways.

I think the syntax recently brough up by Nick is still the most
beautiful:

    result = [ (f(x) as y) + g(y) for x in range(10)]

..but I wonder if it is feasible to make the interpreter sufficiently
smart to evaluate the first summand before the second.

Best,
-Nikolaus

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