[ospohngellert]

The first one is clearly easier to read than the second. However the first one is slow. I believe fast_any is easier to read than generator code.

[ospohngellert]

Actually, apologies I see now. I always associated generator's with the `yields` keyword, but maybe I have to look into them again. Thanks!

[detaro]

The first IS generator code. That's a generator expression, note that it does not have the [] of a list expression.