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

    def decorator(f):
        def callback(ctx, param, value):
            if (value and (not ctx.resilient_parsing)):
                echo(ctx.get_help(), color=ctx.color)
                ctx.exit()
        attrs.setdefault('is_flag', True)
        attrs.setdefault('expose_value', False)
        attrs.setdefault('help', 'Show    this    message    and    exit.')
        attrs.setdefault('is_eager', True)
        attrs['callback'] = callback
        return option(*(param_decls or ('--help',)), **attrs)(f)
    return decorator

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

def help_option(*param_decls, **attrs):