For the example

    teenagers = people.where(lambda p: 20 >= p.age >= 13)

I prefer the good ol' Pythonic way

    teenagers = filter(lambda p: 13 <= p.age <= 20, people)

because I know how filter behaves, but am I certain that `where` gives me the elements not their indices (cf. `numpy.where`)?

In another example

    ages = people.age

The Pythonic way can be

    ages = [p.age for p in people]

Despite having more characters to type, list comprehension is a well-known idiom and I bet many Python programmers would be able to write it down in a second or two.

And how would `old_people.last()` be any clearer than `old_people[-1]`? At least from these examples, I'm not convinced it makes a strong case to switch to the .NET Lists.