def escape_ajax(url):
    defrag, frag = urlparse.urldefrag(url)
    if not frag.startswith('!'):
        return url
    return add_or_replace_parameter(defrag, '_escaped_fragment_', frag[1:])
Expected Improvement over threshold from samples
dataset/ETHPy150Open wcong/ants/ants/utils/url.py/escape_ajax--crossover with--dataset/ETHPy150Open hyperopt/hyperopt/hyperopt/criteria.py/EI_empirical