human
I wrote the below code

    def Wrapper():
        calls = func.num_host_calls
        if (calls >= (len(env.hosts) - 1)):
            return func()
        else:
            func.num_host_calls = (calls + 1)
            return None
    setattr(func, 'num_host_calls', 0)
    return Wrapper

What's a good function header?

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

def runs_last(func):