[Python-ideas] [Python-Dev] yield * (Re: Missing operator.call)

[Antoine Pitrou]

Steven D'Aprano <steve at ...> writes:
> The advantage is even more obvious when married with a generator expression:
> 
> yield from (3*x for x in seq if x%2 == 1)
> 
> instead of:
> 
> for x in seq:
>      if x%2 == 1:
>          yield 3*x

But the former will be slower than the latter, because it constructs an
intermediate generator only to yield it element by element.

Regards

Antoine.