human
Here's a good function header given the following:
I wrote the below code

    if hasattr(func, 'called'):
        return func
    def wrapper(*args, **kw):
        wrapper.called = False
        out = func(*args, **kw)
        wrapper.called = True
        return out
    wrapper.called = False
    wrapper.__doc__ = func.__doc__
    return wrapper

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

def flag_calls(func):