human
Complete the below
def filter_factory(global_conf, **local_conf):

    ''''Returns a WSGI filter app for use with paste.deploy.'
    '''
assistant
#Here is the Python code you requested.
    conf = global_conf.copy()
    conf.update(local_conf)
    def auth_filter(app):
        return KeystoneAuth(app, conf)
    return auth_filter