7886 2019-01-01 19:21:38 searchwww DEBUG: Crawled (301) <GET http://www.sec.gov/Archives/e...; (referer: None)
7887 2019-01-01 19:21:38 searchwww WARNING: File (code: 301): Error downloading file from <GET http://www.sec.gov/Archives/e...

from scrapy.pipelines.files import FilesPipeline
from scrapy import Request

class download_pipeline(FilesPipeline):

def file_path(self, request, response=None, info=None):
    return request.meta.get('filename', '')

def get_media_requests(self, item, info):
    file_url = item['file_url']
    meta = {'filename': item['name']}
    yield Request(url=file_url, meta=meta)