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

[Greg Ewing]

Ivan Levkivskyi wrote:
> On 23 November 2017 at 05:44, Greg Ewing <greg.ewing at canterbury.ac.nz 
> <mailto:greg.ewing at canterbury.ac.nz>> wrote:
> 
>        def g():
>           return ((yield i) for i in range(10))
> 
> 
> I think this code should be just equivalent to this code
> 
>     def g():
>         temp = [(yield i) for i in range(10)]
>         return (v for v in temp)

But then you get a non-lazy iterable, which defeats the
purpose of using a generator expression -- you might as
well have used a comprehension to begin with.

-- 
Greg