def get_meta_refresh(response):
    if response not in _metaref_cache:
        text = response.text[0:4096]
        _metaref_cache[response] = html.get_meta_refresh(text, response.url,
            response.encoding, ignore_tags=('script', 'noscript'))
    return _metaref_cache[response]
Parse the http-equiv refrsh parameter from the given response
dataset/ETHPy150Open scrapy/scrapy/scrapy/utils/response.py/get_meta_refresh