human
I wrote the below code

    base_url = base_url.rstrip('/')
    def url_for(path=''):
        if path:
            path = ('/' + path.strip('/'))
        return (base_url + path)
    return url_for

What's a good function header?

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

def create_url_helper(base_url):