Cause you're apparently not aware that I was demonstrating a use-case for lambdas as one-off functions that are passed to other functions (which is an abstract concept from the particular function used), and you didn't demonstrate how list comprehensions or generators make them not-needed. Of course, that's because it was a leading question and the answer is that the concepts are orthogonal so it cannot be demonstrated.
So that's:
Do note that good code and code golf are two different things! :D