human
I wrote the below code

    def one():
        return a
    def two():
        return b
    def three():
        return c
    def new_closure(a, b):
        def sum():
            return (a + b)
        return sum
    (yield one)
    (yield two)
    (yield three)
    (yield new_closure(a, c))

What's a good function header?
assistant
#Here's a good function header.

def test_nested(a, b, c):