Pop several

Write pop_n(stack, n) that pops up to n items off a stack (a list) and returns them as a list in the order they were popped. Stop early if the stack runs out.

pop_n(["a", "b", "c"], 2)  ->  ["c", "b"]     (stack is now ["a"])
pop_n(["a"], 3)            ->  ["a"]

def pop_n(stack, n):
    ...