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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_url_datafiles(url_db_view, url_db_content, mrio_regex, access_cookie=None):
 """ Urls of mrio files by parsing url content for mrio_regex Parameters url_db_view: url str Url which shows the list of mrios in the db url_db_content: url str Url which needs to be appended before the url parsed from the url_db_view to get a valid download link mrio_regex: regex str Regex to parse the mrio datafile from url_db_view access_cookie: dict, optional If needed, cookie to access the database Returns ------- Named tuple: .raw_text: content of url_db_view for later use .data_urls: list of url """

    # Use post here - NB: get could be necessary for some other pages
    # but currently works for wiod and eora
    returnvalue = namedtuple('url_content',
                             ['raw_text', 'data_urls'])
    url_text = requests.post(url_db_view, cookies=access_cookie).text
    data_urls = [url_db_content + ff
                 for ff in re.findall(mrio_regex, url_text)]
    return returnvalue(raw_text=url_text, data_urls=data_urls)