human
Complete the below
def expose(url_rule, endpoint=None, **kwargs):

    ''''Expose this function to the web layer.'
    '''

Give me a the Python code you requested?
assistant
#Here is the Python code you requested.
    def decorate(f):
        e = (endpoint or f.__name__)
        endpoints[e] = f
        url_map.add(Rule(url_rule, endpoint=e, **kwargs))
        return f
    return decorate