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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 load_content(self, account_id, urls):
 """Prefetches one or more URLs to the CDN edge nodes. :param int account_id: the CDN account ID into which content should be preloaded. :param urls: a string or a list of strings representing the CDN URLs that should be pre-loaded. :returns: true if all load requests were successfully submitted; otherwise, returns the first error encountered. """


        if isinstance(urls, six.string_types):
            urls = [urls]

        for i in range(0, len(urls), MAX_URLS_PER_LOAD):
            result = self.account.loadContent(urls[i:i + MAX_URLS_PER_LOAD],
                                              id=account_id)
            if not result:
                return result

        return True