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:])
Return the crawleable url according to:
dataset/ETHPy150Open wcong/ants/ants/utils/url.py/escape_ajax